Exhaust Back Pressure and Diameter - Summit Racing Quick Flicks
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- čas přidán 22. 09. 2014
- Learn about exhaust back pressure and how it works and why it is important to your engine. Al will also give you a break down of which diameter exhaust tubing you should choose depending on if you choose a single or dual exhaust and the horsepower of your engine.
www.summitracing.com/redirect?... - Auta a dopravní prostředky
Thanks, I installed a 4.5 Inch exhaust system on my 99 caravan
I hope true duals :-D
i just cut mine off. sounds really cool now
I put a 4.5" system on my Honda Odyssey because I wanted 1000HP....
Don't forget your X-pipe.
I laughed at this
Backpressure isn't the issue. Exhaust gas flow velocity is the issue. Ideal piping size is that which causes the fastest flow through it for maximum power. Too small piping chokes the system. Too large piping slows down exhaust gas velocity.
too large also adds extra weight and noise
THX!!!!!!!!!!!!!!!!!!!!!!
correct!!! and his cup and paper trick is crap....if it was atmosphere pressure keeping the card on as he indicated then wouldnt it also do the same without the water in the cup....i think he has other forces at work like vaccum and sticky h20 not a good example....and forced induction would not even apply to his world...but it would in your explanation of choke points and gas velocity.....the exhaust is an extension of the heads really
Hit the nail on the head
Facts.
You're a good magician. Poor engineer.
I think the guys at Summit need to stick to selling parts and not making misleading videos. As an engine builder, you strive to tune the exhaust system so that negative pressure waves hit the exhaust valve as it opens in order to make the pressure at the exhaust valve BELOW atmospheric pressure to get more pressure differential and more flow. "Backpressure" just hinders flow and makes the engine less efficient in every way.
A high flow catalytic converter will sa e your torque, compared to a catless system.
Same with resonators, giving better velocity than straight pipes do.
A drop of what would be known as back pressure will force the air through the pipe harder, giving more velocity.
Too large of exhaust piping will lower the velocity, because of near zero back pressure.
@@HondaTrumpAi The scientist couldn’t haven’t said it better.
@@HondaTrumpAi question I have a 4 cylinder sedan with a muffler delete and Spec-D exhaust welded on if I did a resonator delete would I be hurting my engine if so how?
@@HondaTrumpAi hey help me out. 2jzgte single exhaust system straight with on aero muffler putting out 700 whp how many inch piping?
@@213gully 3.
Because of this video I just bought a 3” exhaust system for my 1.6l sohc motor because I want to sound like a fast vacuum
2:45 Looking at this , all the 1500-2000hp Supra should get 15 in exhaust lol
It boggles my mind that a business like Summit would consent to let someone who doesn't understand fluid dynamics instruct people on exhaust systems. Summit, please consult an expert. This just propagates myths.
+unharmonix agree!!
Wow finally found another smart human
hotrodsurplus are you telling us that you’re an expert?, it’s possible , you can be any kind of expert while pecking on your keyboard 🙄
So is this complete video unreliable for power-size ratio?
This "back pressure" wise tale has been passed around for over 50 years! "My grand paps great grand fathers brothers sisters ex husbands son inlaw said that he lost torque on his Model A street rod when he added dual exhaust... so naturally the loss of torque was because he removed the beloved back pressure... as soon as he added the smaller exhaust his back pressure returned and he made more power... LMAO!
I honestly dont understand why more people dont have the slightest grasp on basic fluid dynamics... just a slight grasp would do wonders for most.
did this guy really just show me a test of vacuum and try to use that to talk about back pressure????
Yes, he did.
daniel velez it's not vacuum, the same amount of air is still in the cup when he flips it over
Mateo Gomez Gomez it is vacuum along with the vescosity of the water causing a seal at the edges of the glass to the paper. water is heavier then air it pushes down on the card. water is to thick and heavy for air to be pulled threw the edges. causing a vacuum
Lmao I said the same thing wtf Chuck
Yup! I almost clicked out of the video at that point but it was like watching a train wreck... I just could not look away.
So I was looking into welding a 2.5 or 3" exhaust muffler on my stock 2.25 piping, will there be a significant sound difference b/w the 2?
I have a stock 2004 Tundra 4.7 V8. I spend a lot of time off road and wanted to add some sound plus some more torque. My idea was a x pipe after the cats, dual mufflers and then step down to 2 inch tailpipes dumped right above the rear axles with turn downs.
I wanna keep it high up and stop it just after the axles for clearance. How would that affect backpressure going from stock single with 2.25 to duals at 2 inch?
Great information and thanks for sharing with us. My question is that I have a 1998 Lincoln town car and it is the time for the car to get little upgrade. I ordered a 3 inch inlet/outlet 16 inch length resonator and when talked to the specialist about the diameter of the pipe, he recommended 2.5 inch pipe. Unfortunately I can not return the resonator, but I ordered 2.5 inch inlet/outlet muffler and waiting for it to arrive. My question is about the resonator. Can a resonator be bigger in diameter for my car and is 2.5 inch pipe ideal for my car? I hope I could make some sense with my question. Thanks
Choosing the right diameter exhaust pipe is to make sure the exhaust gas temperature and velocity stay up. Back pressure is created when your engine is pumping out more air than what your exhaust can handle, as opposed to the partial vacuum created by exhaust scavenging...duh
Basically your engine has to FORCE your exhaust out, so your engine loses some power because of that, particularly at upper rpm. Backpressure is a myth that people just keep believing. 😔😔😔
I have an enfield classic 500 efi which has an upswept silencer which was recommended by RE. Now i am planning to change ghe silencer so tht i could get that old royal thump.( new engines r refined and lacks that old cast iron thump). So if i try to increase the thump using a wildboar or megafone silencer will it affect the engine.it surely will increase the backpressure right.
thanks, can we use this system in one cylinder motors too? i measured for a 1 cylinder 200cc engine that produces now like 13hp with open exaust, and it blows air like 2 meters away i think i will get plenty of torque if i stop that air wasting away from my motorcycle, i wish i could get higher revs with this method, so i measured i should have 0.50 cm as pipe. it makes sense,right?
@SummitRacing I own a 2015 lifted Scion xB. And since i only have a TRD sport muffler and a 23” length cherry bomb glasspack. The inlets are weld between 2.5” and factory are 2”. It creates a nice mature exhaust note.
Now I am planning to get a full custom exhaust 2.5”. With 2.5” magnaflow high flow cat, and a 2.5” vibrant ultra quiet resonator. This will give much deeper tone and better performance, and also better breather correct? Along with headers included since why I am gettin a high flow cat.
No sport muffler from axle back bytheway.
So instead of sport muffler axle back, to glasspack, to factory cat.
Switch to no muffler on axle back, the vibrant ultra quiet resonator, and high flow cat.
Hello!
We are using a 50cc engine(2.81hp @6500rpm) for running a very light weight car prototype. Every time after calculation of the exhaust diameter and length, some new parameter comes in the picture. Can you suggest the range of diameter of the exhaust pipe and the last for the above mentioned engine?
Thank You!
I have a resonator delete with a muffler, would it help for performance to get bigger exhaust pipes kind of like a CatBack but welded on? I’m of course gonna get tuned after.
What size do I need for the 383 stroker I bought from summit blue print engine installed it in my 1975 corvette? I’m running 2inch pipes now
Would the idea of back pressure be different for Forced Induction? I assume no extra back pressure is necessary for a boosted motor since the turbo creates its own back pressure.
I want to run true duals with 8 inch Cherry Bomb glasspacks and high flow cats on a 1st gen Chevy Silverado with either the 4.8 or 5.3. Which pipe size would be better from the manifolds back all the way to the tips? 2.25" or 2.5" I want it to crackle.
Thanks for the video. Would you please clarify something for me. At 3:30 you say "From 250 - 350 HP" but the video text shows "250 - 300 HP"? Should the video text have shown "250 - 350 HP"?
I have a 2003 corolla hatch with 2" exhaust and I want to do a muffler delete would I just weld on a straight pipe with 2" diameter after the CAT? and what pros and cons will I get since I just want the raw sound?
how about an el camino with a 305? its probably just under 200 hp and i plan on true duals, super 44 flowmasters, and an h pipe. how big should the pipes be?
I have a 06 grand prix 3.8l with a k&n air intake, currently with stock 2 in single exhaust with a flowmater 40 delta flow & resonator delete. Should I upgrade to 2.25 in exhuast or 2.5 exhaust. (My car probably has between 200-215hp)
what is perfect resonated tip for my 2003 audi a4 quattro 3.0?
becuase i want to make it loud. i have an xpipe and muffler delete
got a question I have 2.5 in true dual from down pipe no cats...from 2300 rpm to 3500 rpm I have this raspy high pitch sound I guess the correct word is "resonance" is this considered back pressure and if so what can I do to fix it
well.......
i have a 2009 Toyota Sequoia stock headers deleted 4 cats & replaced it with 2 same factory size pips directly fixed to ( 2.5" ) 2 X enter TO ( 3" ) single exit Borla pro XS muffler
am i doing it right or theres another good idea to gain more HP's ??
3” it is for my Geo metro...thanks Summit!!!
3 cyl? Triple pipe setup? You might want 4" for a beast like that.
🤣🤣🤣🤣💀
1 inch for each cylinder? 😁
Get a 3 to 1 collector that goes to 10"
If I have a standard 2.0 L 4 cyl engine with no modifications whatsoever and i put on a cat back exhaust for example for a nicer note. And let's say it lets the exhaust flow too freely for my engine power and I have too little back pressure, what problems will this cause. Should I still purchase this exhaust?
Hi what would you recommend for a true dual system on a 4.4L V8 BMW 645Ci 333HP? I had a shop fit a 2" system on my car and I think they used way too narrow piping. I'm in the process of asking them for my money back.
Is it okay to have bigger outlet from muffler but still have right diameter on inlet for engine HP?
i have a 2018 ford focus st pushing 252hp stock, what exhaust is recommended?
Awesome explanation of back pressure in the kids experiment.
If I have a stock cumins 5.9
And install a 5 inch straight pipe
Will it differ in anything other than sound ?
Like economy
between 301 and 349 bhp you don't even need an exhaust it's ok
Unless it’s a factory pipe. U what it to breath better and run much smoother.
Summit, I have a degree in automotive high performance and I know this is not how exhaust flow works, the story is about velocity. There is a specific formula for how big and long each tube needs to be in your exhaust system, this has to do with pressure waves and flow. The idea is to have a vacuum in your exhaust not pressure, pro stock dragsters actually have a measurable vacuum at the exhaust port and pressure at the intake port that equals around 7psi of “boost” combined on a naturally aspirated engine!!! This is due to the inertia of air.
On an engine that produces 220hp would u recommend 2.5 or 3" single piping??
Hello! what a cool channel, I have a Opel Corsa (or vauxhall corsa) 1.4 turbo, only 120 HP... without a back box, to not reduce any performance (or to have a better performance) in a single exhaust do I have to run in 2,5'' or less??? thank you!
Hello. may i ask you something?
i have a civic r18z1 with j35 throttle body, k&n intake, catless header and a remap. what size should i use on my exhaust pipping upgrade without losing low end torque? 2.0 inch 2.25 inch or 2.5 inch.
Hope you answer thanks.
Hi, I appreciate your help. I just did and ECU tune to my bi-turbo car and now its putting around 530hp, I have added a sport filter and now I'm planning to replace the stock downpipes. What diameter should the new catless downpipes be? Thanks *edit* and its a dual exhaust system.
Mo Al , We need some additional information from you. Can you give our tech department a call? 1-330-630-0240. Thanks!
i have a 02 accord v6 sedan dual exhuast.but is after maket.i think i lost power do to no back pressure is it true?can i make it single?if yes do i put a muffler for back pressure?
Hi...any advice on the best system for a 4age20v blacktop 115kw ... 2.5 inch would work out to approx. 63mm exhaust
Just throwing it out there I have a 69 cougar 351w 4 barrel, headers, want to upgrade my exhaust system what diameter size of pipe should I use?
how would i calculate the primary pipe length , diameter, also same for muffler design?? any calculation that required?? i have read many sites about it but no one have answer that suit my conditions. plz help
Are those diameter sizes engine specific? Like OHV/SOHC V8 only? NA/Force induction? We are three guys with different engines. DOHC 4.0 Litre V8, DOHC 3.5 Litre V6 and DOHC 2.0 Litre Turbo I4. Will this guide work for all of us? Also, will a X-pipe on the V engines change the recommended diameter sizes?
Look all engines react different to exhaust changes. On inline 4 and 6 if your piping is too big then the torque down low will be gone and feel sluggish but High rpm gets a little bump. V8s seem more forgiving but it is true that you need the correct pressure and velocity to have a good ballance of low end torque and output. This I have found on NA engines not boosted and from experience not reading books.
So if i have a turbo 2.0 what size do I need? Oh and i drive at high rpms . Only way it goes quick enough to keep up with flow of traffic.
No engine needs back pressure! Its all about exhaust flow and velocity within the system. Go to small in ID and gain back pressure, go to large and lose velocity. The perfect exhaust would be sized to eliminate any "Back-pressure" and maximize velocity. Back pressure is exactly what it implies, its a restriction! Velocity on the other hand is what creates the scavenging effect from the cylinder. Every NA cam is designed with an overlap. The overlap is a small duration built into the cam where the exhaust valve is closing and the intake valve is opening, for a short duration both are open at the same time. An exhaust system that promotes velocity will have high vacuum on the exhaust side which literally tugs at the intake side giving the intake a running charge into the cylinder just as the exhaust valve snaps shut. This is called the "Scavenging" effect and most all cams are intentionally built with this overlap in order to take advantage of the scavenging effect. The quickest way to kill the Scavenging effect is to add back pressure! Long story short... dont believe everything you hear on the internet... like the video above, you are bound to be mis informed by people who claim to know what they are talking about... So dont take my word... get informed with the theory of operation and become a better Hot Rodder!!!
better. I still got no clear size formula. I calculus required ? That's ok.
can you suggest exhaust diameter for a 624 cc engine which puts around 38 BHP. thank you
guys I have 2013 f150 4x4 5.0/ ive been wanting to have a dual exhaust installed with a muffler on each pipe strait back instead of going to one then back out into a dual but a guy told me that it would turn on the check engine light. but he did mention I could remove the resonator to give it more sound and that it would be best to have just one muffler then back out into dual. and I was thinking of a flowmaster any advise I'm new to this truck thanks.....
i have 25 bhp bike and planning to put a free flow exhaust like the leo vince go corsa.can u help me with the exhaust bend pipe size.my bike is a 200 cc 4 valve single cylinder engine.
Question: I have a 2001 Sierra 1500hd I installed long tube headers x pipe 3inch exhaust. No cats. I definitely lost power is this because I have not enough or no back pressure? Or does it just need tuned? I’d assume both it definitely got an increase on the high end of things but on the low it’s much slower and according to my scanner I lost torque.
Hi, I have a inboard ski boat with dual 3.5" exhaust that's about 6' long from the manifolds. I need to add silencers to reduce noise, and I figure it'll also add some back pressure. Can I add the silencers midway in the exhaust, or should it be at the tailpipe? Thanks, Don
+Donald Coulter ,
Adding them midway in the exhaust path will work just fine!
Heool I have a 3inch downpipe reduced to a 2.5inch decat and a 2inch custom r32 rep exhaust system will that be on ?? I have a mk4 golf 1.8t pushing just under 200bhp ??
the atmospheric air pressure is 14.7 psi at sea level. what he was trying to explain with the cup, water, and cardboard is you have 14.7psi atmospheric air pressure looking at your tailpipe and if it is too big and not enough adequate flow pressure to overcome it, the 14.7psi aap *causes* back pressure on the exhaust. if the exhaust flow is lazy, it has to fight the atmosphere to come out.
if you have 500 horsepower to the wheels and had a single exhaust period you most have a sleeper on purpose.
I have a 2017 Chevy Silverado with the 5.3l. I recently bought a borla atak full exhaust system that was meant for this truck. But I feel that it has a bit hestiation. Do think the the variable Timing System or it needs a tune.
This is pretty hard to diagnose. But we would say if you have made changes to the truck it would need to be tuned to account for them
How much is the first exhaust you showed in the clip? The one with water in it?
great video cleared up myths about back pressure
So I Have a tuned 08 Silverado with 3” pipe from the door to the axle with a volant cat back turndown is this a good setup I don’t have the 3rd cat
If back pressure helped in ANY type of way then NASCAR would run it, pro stock, top fuel or any other racing would all use some sort of back pressure... But they don't... Scavenging is different and it has to do with pressure pulses working together to produce a small vacuum, not "back pressure". That's it. End of story. Point blank.
Johnny SIX4 !! At least someone is informed, there is so much misinformation in the industry because of videos and "internet experts" like these
Johnny SIX4 !! Very simple. You have street applications and race. With racing you spend most of your time at high RPMs therefore the flow will be greater thus requiring less back pressure. Im street applications, since the RPMs will be lower most of the time, you need it so the scavenging effect takes place. Otherwise you'll have no torque on the low end and only extra horses on the top end like race cars. As a result you lose low end torque and ability to pull through the lower gears and RPMs. Let's not mention fuel economy loss.
You NEED back pressure to create the scavenging effect more so in trucks. It's a large vehicle that requires torque to get the large body moving, not horsepower. Horsepower takes effect at the upper end of the spectrum where torque isn't required as much.
Mustangs are light and have high output motors. Stop and go traffic will destroy your fuel economy BUT with a free flowing exhaust, your horses will be higher so in race applications where you're at almost redline, you'll notice the benefits. I don't know very many people that spend that much time at high RPMs while driving to work, so it's not the most economical. You choose how you want your pocket book to go. Poor fuel until you hit redline or decent fuel the way the car was designed and sacrifice the upper end. Take your pick, you can't get both.
How that answers your questions and clears your confusion....
Sofa King , NO, NOT BACKPRESSURE, YOU OAF! VELOCITY, AND ONLY VELOCITY. You're wrong because while backpressure will create velocity, it comes with parasitic pumping losses that are created bc the exhaust isn't working good enough, so the engine has to FORCE the exhaust out, hence pumping losses, but at least the pressure creates velocity. If you use proper size pipes, use mandrel bends, a proper balance pipe for dual exhausts, as few of bends as possible, as gradual of bends as possible, and as short of a system as possible (except doing open headers on a stock or mild build). Those will keep your velocity high AND cut backpressure too.
You don't need one to have the other! You just need to get the right stuff! Geez
Back pressure doesn't create the scavaging effect the fucking sonic wave does its a fucking harmonics thing not back pressure smfh
My hero.
Right now designed and put in a custom header 4-1 with high flow cat, 2.5” pipe and a 19” oval Borla proXS
Into a 2011 Chevy colorado
2.9L stock engine with some upgrades
Do i make ok?
What would you recommend for a 2006 silverado with long tub headers and a single pipe exhaust
what did you end up doing for your exhaust?
If everything is stock in the exhaust system up to the muffler, can using an aftermarket muffler with either single or dual exit ports affect the back pressure? My Ram 1500 had a FlowMaster single in dual out, then I changed it to a VR single in single out. Would this change have any effects on the back pressure? Thanks!
+wannabeangler ,
Absolutely! Depending on the internal construction (restriction) and pipe diameter of the muffler, back pressure can be lessened regardless of the number of outlets.
I have a 1999 F150, 4.2 V6. I am keeping the resonator's and catalytic converter's as well as stock exhaust pipes. I am looking to replace my worn out stock muffler and I like the sound of the thrush glasspack. I am just wondering if the straight through design will damage my motor. I use it for towing and I don't wan't to lose low end torque.
+GREATSWORD1000 ,
By keeping the factory pipe size and converters and simply changing out the muffler, no torque loss or engine damage will occur.
Thank you very much!!
What is also important is scavenging of exhaust correct exhaust sizing will help "pull out" the exhaust pulses from the other cylinders (my explanation sucks) to big or dual exhaust in some cases reduces this effect some vehicles do better with a 3" single vs two 2.5" duals
how to calculate header lengths considering back pressure ( i need optimum lengths )?
For those bringing up NASCARS, etc. let's explain something so you understand how motors work.
Johnny SIX4 !! Very simple. You have street applications and race. With racing you spend most of your time at high RPMs therefore the flow will be greater thus requiring less back pressure. Im street applications, since the RPMs will be lower most of the time, you need it so the scavenging effect takes place. Otherwise you'll have no torque on the low end and only extra horses on the top end like race cars. As a result you lose low end torque and ability to pull through the lower gears and RPMs. Let's not mention fuel economy loss.
You NEED back pressure to create the scavenging effect more so in trucks. It's a large vehicle that requires torque to get the large body moving, not horsepower. Horsepower takes effect at the upper end of the spectrum where torque isn't required as much.
Mustangs are light and have high output motors. Stop and go traffic will destroy your fuel economy BUT with a free flowing exhaust, your horses will be higher so in race applications where you're at almost redline, you'll notice the benefits. I don't know very many people that spend that much time at high RPMs while driving to work, so it's not the most economical. You choose how you want your pocket book to go. Poor fuel until you hit redline or decent fuel the way the car was designed and sacrifice the upper end. Take your pick, you can't get both.
How that answers your questions and clears your confusion....
Back pressure in the exaust system require's the engine to work harder period. Back pressure kills efficiency and performance , no ifs and's or butts. What increases efficiency and performance in a exhaust system is Exhaust gas velocity. And thats where pipe size comes into play. To big of pipe reduces the scavenging effect of the exhaust system by decreasing velocity. To small creates back pressure slowing velocity. So a correctly sized exhaust system with a correctly located crossover or X pipe is what most important on a street driven vehicle. Race tracks......less means more. So open headers are king
That’s it. I am officially moving to jegs.
Looking for what size pipe would still allow some back pressure. I have 94 f150 straight 6 with a split manifold. Looking to do true dual exhaust with cats and mufflers. Will that setup still allow the necessary back pressure?
+Matt Standefer,
Yes, unless you have some air flow mods such as an aftermarket intake, a cam, a ported head and header, there is no reason to believe that dual 2 inch pipes with high flow cats and mufflers won’t work perfectly for you.
I got a 2.25 exhaust pipe and I just installed a 2 inch inlet/outlet Magnaflow turbo muffler...Is that going to slow my car?...Or it doesn't really matters?...Thanks in advance for your help
I have a 496 ci chevy i want to build a custom exaust do you have every thing i need im wanting to go out the back side by side about 8 in apart i have a fuel cell
Hello, I have a 07 c230 with 2.5 v6 and 201hp. Had just installed headers and done cats delete.I believe my stock exhaust pipings are 2.5 or 2.75. Would dual exhaust benefit me at all? Going from headers to xpipe or magnaflow 12468 then to quad exhaust?
Appreciate it.
Alvin Vu,
Yes, a dual exhaust mod with an x pipe will be beneficial to you. But remember, you will be moving more air through the motor, so a re-tuner of the computer will help produce the most power.
I have a true dual exhaust v8 with 360whp, stock is 2.25 for a cat back dual h-pipe exhaust should I stick with 2.25 or go with 2.5?
Ive installed exhaust cutouts on my 2005 mustang gt right at the downpipe , so that eliminates pretty much all thr back pressure. Now im confused , alot of people ran on the dyno with cutouts and they got better hp.can u please explain? Thanks
HI mehio hatab,
Most information regarding this subject assumes that a full exhaust must be used due to noise or emissions laws. With that in mind, being able to minimize back pressure is what they focus on. It should be obvious that when you visit a race track and see a dedicated race car, that they are not running a full exhaust, but usually just a set of long tube headers to direct the exhaust out of the engine compartment. Even there, back-pressure can never be totally eliminated, just minimized!
I have a bmw e90 328i and was wondering if I did a muffler delete and put in a 3" pipe extension and put back the stock tips would there still be enough back pressure to ensure decent mpg
Hi Brandon,
When increasing airflow through a computer controlled engine such as yours, its best to have a new tune done at a local dyno shop to ensure best all around performance! In some cases you can find a computer programmer for many vehicles, but make sure other modifications are taken into consideration by that vendor for best results!
Hi, I own a 1994 Dodge Ram Cummins Turbo Diesel. The garage just welded a smaller exhaust pipe and muffler into the existing pipe.. Total hack. What will this do to my truck? Thanks.
Hey, my truck has a true dual at first (2") but at the catalytic converter (recently cut out and missing due to being broken) it combines into a single (2.5"). Since the cat is gone, should I turn it into a true dual, or combine as is?
Hi Mr. Thea,
Due to emissions laws, we able to assist you in replacing your catalytic converter with a new high flow version!
i have a 1999 Camaro SS and its all stock, and thinking of removing my resonator only, because i want it a bit louder, will it effect my gas mileage or back pressure by removing it or effect my car in anyway besides the sound being louder?
CamaroWarrior ,
You should consider a new tune for the computer!
Hi guys, good day. I own a small engine vehicle with only 66hp as per papers/manual. Any suggestions for recommended exhaust system? Just a single system and by the way the engine only have 3 cylinders. Planing to tune it up. It's a Toyota wigo here in the Philippines or Toyota/daihatsu agya to some other Asian countries. Thank you in advance.
Awsome, just what i wanted to know👍 thanks
Awesome. Glad to help.
@@SummitRacing Hi first of all great video & I'm a fan of summit racing customer in service is impeccable, I just wanted know what would be a good size piping for a 2018 Acura tlx aspec, it is a 3.5 liter puts out 290 hp, the original piping is 2.25 single exhaust. I currently have it straight piped no mufflers or resonators but a cherrybomb extreme will be in the mid muffler which is 2.5, so can I go 3 inch all the way back or is 2.5 better.
is a single exhaust better ass far as weight reduction? vs possible flow
also putting power aside as long as it's neutral whould a 3.5 in sound better then a 3.0 in ?
+Corey Becraft,
Less pipe equals less weight and a larger pipe means more sound! Keep in mind that the sound also depends a lot on the muffler that will be used.
What exhaust should i get for a 04 marquis with a 3in Muffler
Summit Racing! 1976 chevy k5 w/350. I want to do a single exhaust I'm lost on the diameter of pipe for my y pipe before I go to collector. Also what pipe to use for the main exhaust. Thank you! Much appreciated!
+dake c,
Can you give our tech line a call? 1-330-630-0240. We need some additional information from you. Thanks!
ok question.
I have a ford falcon Australian car with a 302 Windsor v8.
its a stock car making 248hp or 185kw.
I went with a dual 2.5 exhuast setup with X pipe and amd single muffler on each pipe setup.
I'm guessing this is an over kill for my car?
+Mr Tickles,
According to info published by Flowmaster, dual exhaust systems for motors over 400 horsepower can benefit from dual 2.50” pipes. Smaller motors making 250hp should use 2 - 2.25” pipe sizes.
Hi . I'm waleed shaheen .thanks a lot to answer my questions. But I like to be more clear regarding the right diameter should I use for exhaust piping . As I mention my car shelby gt500 2009 the exhaust tubing is 2.5 inches and I like to replace with 3 inches and x pipes magnoflow . The hours power now at rear wheels 515 and engine hours power is 527 . As I watched your video its O.ky ? .
Hi Waleed Shaheen,
As stated earlier, a 3 inch exhaust along with programming will add power. If you are not going to reprogram the computer, stay with the 2.5 inch pipe size the car already has.
I got a 5.7 tahoe what size pipe should I do
Hey,
We have a Honda CBR 600 rr engine and we need our maximum torque to have between 5000 to 6000 rpm whereas the stock engine gives max torque at around 9000 rpm. What should the dia of the exhaust pipe should be?
sachin ht smaller diameter. It should make your torque number peak lower and then drop off as you go higher in rpm due to the smaller size, and less air flow
this guy has no idea what he is talking about vacuum is not back pressure I'm going to have to start my own channel
I am running D16Y8 with and D16z6 pistons, maybe putting up a little more than 250hp for now, I just removed my resonator (straight pipe from headers till muffler) and I experienced a power loss, it it because of the reduction in backpressure? Since there is no restriction now for the exhaust flow, I am using 2.5inch piping, please help, should I get the resonator installed back again or use 2 inch piping instead of 2.5inch?
Humayun Shah,
By doing this you’ve increased airflow through the motor and could have potentially leaned the motor out reducing its power output. A dyno session and retune of computer programming is in order here!
Which size of exhaust pipe should I go for my Willys F-134 Hurricane engine to get maximum performance out of it? Should I also keep the muffler in place or should I remove it?
+Ato Lkr ,
There is no reason that a 2” pipe won’t do just fine here. Unless you’ve done some mods such a s a cam and intake, in which case a 2.25” upsize would work good! As far as a muffler is concerned, how loud do you want it to be?!
+Summit Racing Thank you for the reply. I want the sound sound real loud enough but not too extreme.
What are the intake modifications that I can look for?
I have a motorbike with 16 hp and i want to know what exhaust should i use because i can't find any table for small bikes
1 have a 2003 ford f250 5.4 2v and i have shorty headers for it and want to h pipe it but dont know what size piping to use im trying to get all the low end and mid range hp and tq i can cause i haul cars can u help me out
i have a chevy tbi 350. would 2.5 off of the headers to the y pipe then do 3 after that be ok to do?
+Nathan Miles,
Due to the limited flow of the TBI unit, 2.25” pipe off the header to a Y pipe and a 3” single exhaust is all that is really necessary!
question? i have a 05 subaru wrx at 320whp single exhaust should i go 3.5 all the way thru no cats or resonator?
Hi Mannequin,
Well, we certainly won’t advise you to remove a catalytic converter, but we can help you find a high flow for that 3.5” pipe size to help increase flow for max power. Give us a call. 1-330-630-0240.
v rod muscle 1250cc, how to choose a good exhaust, long or short
Hi I am waleed from Bahrain . I have shelby gt500 2009 and l like to replace exhaust system size from 2.5 inches to 3 inches with x pipes magnoflow . do you think the hours power slightly will increase . Now without replacing the exhaust system the hours power is 515 at rear wheels
Hi Waleed Shaheen,
Below are two links to the parts you’ve requested. The addition of these parts will increase power but, only a dyno and some computer programming will reveal it!
www.summitracing.com/parts/mpe-16433
www.summitracing.com/parts/mpe-16674
Okay somebody answer me. Removing the exhaust resonator. Will this affect performance? I have a 2.25" custom catback with a perforated 12" resonator. Removing it will it reduce performance or all about being louder?
Mark not by a large amount as the resonator is there for mainly dampening out sound.
Mark No real change in performance. basically it's kind of like a glasspack. Dampens and controls sound a little bit, but doesn't really change flow. basically a straight pipe inside. You'll make your exhaust louder and a little higher pitched taking it off.
For me the back pressure is very important in a 2 stroke engine but not in a 4 strokes where the main think is the speed of exaust gases.
I’m installing on my 02 540i E39 BMW a Borla exhaust from axle back, Im told it came off a bmw I can tell you it wasn’t a E39 and possibly not a 540 but it sounds so good !!that’s why I’m hell bent on installing it. But it’s dual exhaust and there’s no room on the rear passenger side so I’m going to delete that side and go with the single exhaust but in order to do so I have to increase the pipe diameter to 3 1/2 “ diameter for a 282 horsepower car (+nitrous add 100 more) do those figures sound right ? I’ll need 3 1/2 “ diameter ?
Where can I get 3 1/2 diameter pipe and have it mandrel bent ?
And do I go all the way to the exhaust tips
I have a 2.5" Borla single exhaust and it's sufficient to ~350 hp. Not sure where that"chart" or "rule" came from...