Protuner explains DAM & Feedback Knock // Tuner Talk # 9
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- čas přidán 18. 06. 2024
- Boosted Performance Tuning writeup: www.boostedperformancetuning....
Graham sits down to talk about launch control, flatfoot shifting, DAM, feedback knock, and his tuning philosophy. When it comes to either your 2022 WRX or your 2002 WRX the knock system has not changed at all. This information will be helpful for everyone!
Disclaimer: I am the owner and creator of all the music in this video.
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Performance:
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These videos are such a service to the VB community honestly. just packed with information.
It's getting to the point that it can be applied generally to Subarus.
The TT’s are amazing for both new and old Subaru heads 🙌
great interview, the stock maps for sure are "overtimed" on the base tables, but the knock system is designed to reduce the extra timing in the hot areas and keep those areas learned until the ecu is reset, then it has to relearn all those hot spots again and pull that timing back out again. The learning is saving your engine. I tuned my own on the street and went ahead and reduced the base tables in the hot areas so that the knock learn system didn't need to activate. Now, if any other hot spots come to happen, I still have the knock system enabled to help it out if needed.
Thanks for the vb content!
Awww man thank you so much for the support 🙏 I can put it towards my new turbo 😂
THANK you Graham for addressing the DAM issue that I see all the time on Reddit.
This was a great convo. Thanks guys
Love these videos! Interesting thing happened on my VB.
I had a significant DAM drop to 0.5 during a down shift, and the DAM went back up slowly to 1 again, but the ECU essentially learned that behavior information and when I did the same shift later on, the FKL and FF didn’t budge, as if it knew, “oh shit, I overreacted last time” and no issues after that.
Keep it coming guys! I lovvvve the info!
I got my vb tuned at Prime Motoring for about 1 1/2 years now and the only time my DAM moves is when the climate is too hot and/or humid. Just as you said, it drops to 0,5 and slowly goes back up to 1. My knock varies from 0 to -1.05 and at some times -2(something).
Thank you for the great video. Graham is such a class act. I don't know how he has time for all of us, but anyone working with him should feel privileged. I know I do. Thanks for everything.
Great content! Very interesting.
Love these! Thanks !!
awesome Video.. thank you both.. fantastic info. the dam is a "built in safey switch"
This cleared so many concerns and really did help get informed. Love the content 👌🏼
I'm so glad it helped! The DAM is definitely confusing to a lot of us who are newer to tuning.
Awesome video! Love the info and really feel like I'm learning for when I go beyond cosmetic upgrades! Thank you so much for bringing this info to us in a way that's easy to understand for the average person!!
I'm glad it helps. Graham is fantastic at teaching and I always learn so much.
Great video. Thank you
You have really informative videos. That guy explained the numbers really well.
It's all thanks to the tuners who are willing to show up and educate.
Love ❤❤❤ all the info !!
Thank you! I'm glad it helps 🤘
Thanks again for these tuner talk videos... it really helps a ton when you are a novice, appreciate you guys!
I totally agree. I learn so much every time I have any of these tuners on.
This video was very convenient thank you for this i fell into a rabbit hole learn about this when i got my access port. 😂😅
Same here i bough my first wrx recently and scrambled to learn so much in a short time just to have that peace of mind that im not hurting anything driving it.
Tuner Talk is back with Graham!!! Love these videos, keep it up please.
Thank you! I love doing the tuner talk videos. There's just so much information to be gained.
Round 2 of watching this video this morning. You guys are great! Hopefully you can get another tuner talk with DMann as well! Great info🤝
I have talked to Dmann and he will be on the channel soon!
One thing I wish Graham would have stated more clearly is that all modern engines knock from time to time and your engine is fine. An instance of knock or fine knock learn on any given day is not going to destroy your engine. Going with a poor tuner, using the wrong fuels, modding w/o tuning, and not monitoring your car will destroy it.
He did mention. You get a knock and the timing my be retarded. This saves your engine. Correct.
Sorry if I was not more clear on it! Around the 21:30 mark in the video I do talk a bit about loud audible knock and lighter "normal" knock the ECU can hear but we cannot usually hear ourselves. You are right that all combustion engines will have some light knock at times and this is normal. The heavy, loud, sustained knock that you start to hear is the bad kind and what the DAM movement aims to control when needed.
Great information. I was actually going to Dm you and ask some of these questions. 😊
Thanks I'm glad it helped answer some questions 🤘
YES!!!! Please More in depth talks about air fuel mapping and its relationship with the engines 4 cycles...like how he mentioned antilag...I want to know everything he's willing to teach us LOL
We can talk about fueling on the next one! Maybe some other tuners can learn a thing or two :)
@@boostedperformance_oof 🥶 🧊 ☃️
Can't wait to get tuned. Going this week to Subaru for another throwout bearing issue. Can't believe all the issues I've had. I've never even really launched the car or beat on it for real because I'm aware of the stock components being weak. Trans, and second clutch.
Ill be waiting for that air fuel ratio video i have no idea what iam looking at but its set on the gauges of my access port. Just in case one day the difference is so drastic i know something's up and hopefully i can catch an issue before it becomes a bigger problem.
Graham could build a bulletproof monster of an engine for a WRX. Engine knowledge and tuning knowledge.
Dude just wait till you see the STI he is building in his garage. I'll go back to Iowa when it's done to showcase it.
Can't wait to see this!@@HeavyMetalWRX
The flat foot shifting is awesome
I still plan on doing a video, possibly this weekend showcasing FFS and LC.
Fantastic video! So much helpful information. I was hoping he would touch on how to increase your DAM after it drops. I've noticed if your DAM drops, you can slowly raise it back to 1.00 if you roll into 2-3PSI of boost in 3rd or 4th gear and your ECU likes what it sees.
We did actually mention that! I'll have to scroll through and find the timestamp. It's as you said. It does require a few pulls through the rpms for the car to bring itself back up.
@@HeavyMetalWRX ahh okay, must have missed it while watching (long video and my brain can only retain so much) thanks again for this interview, extremely good information! Graham is a tuning wizard and really knows his stuff
Another TT! Yoooo that new bl54xr has your name all over it 👀
Duuuuude before next summer I'll get one.
@@HeavyMetalWRXthat turbo has to be the standard for direct bolt on! I get it would gap my g30-770 setup with how fast it spools and torque comes on 💀.
@@luvhcchris I actually would get it and just keep it at about 400 whp. I will be racing next year so it'll be perfect to keep on a blend and low stress. Then I'll have a kick ass 450+ map for the streets 😂
I am so new to Subaru, and really appreciate this content. The FA24 has an EGR system. Does this play any part in the knock reduction strategy?
Rather that cutting timing, would additional EGR flow counter detonation?
Graham is the most Gangster mf that has made my ej20 stock block do things that it was supposed to do. If you listen to the words of wisdom from people with experience alot work comes to fruition. Thank you Graham for everything, i am taking your advice and the standalone is on its way 😏
THIS IS A GREAT VIDEO 1000% NEEDED THIS!!! Quick question idk if you can answer. If you can only get 91 octane gas in your area like me in California. Would you say it's better for your car/engine to run a e-30 map indefinitely rather than running my 91 map with 91 gas? Might be a dumb question but knowing how some gas is better than others would running a e-30 with okay gas vs. like an expensive chevron only 91 octane? Thanks in advance
Awesome explanation! Understanding DAM and feedback knock is crucial for tuning. We sent you an email, take a look.
I'm about to buy a tune from you, Graham. Keep your eyes open for me!
Awwwan, make sure to tell em I sent ya!
I already wrote him an email saying his Tuner Talk appearances have convinced me he is the premier VB tuner and that's why I am buying a tune from him despite already having a custom E Tune.
VERY interested in seeing if my tuner has anything for cold starts. 😂
anyone had a pcm p0606 code?
Why are feedback knock readings more common (and considered acceptable) during lighter loads? Referring to Graham's website.
I wanted Graham to talk about Dmann lowering the knock sensor sensitivity in his tunes 😞😂
👀👀👀 source? Interesting topic lol
I don't think Dmann would do that unless you a sked for a crazy saucy tune. Look at Clark Turner tuning. He just posted a 370whp Dyno with intake and catback ONLY on 93. That's who I suspect does shady stuff.
@@HeavyMetalWRXinteresting !!
@@HeavyMetalWRX Clark uses 2015-2021 and posts his graphs. His tunes all read about 30/30 more than what the cars tuned to lol on the stock turbo. He’s a good tuner but def focuses on just high volume and I’m sure he’s getting the bag 😅
@@luvhcchris I find his practice not to be great and the one and only interaction I've ever had with him has been overwhelmingly negative. Customer service and personality to me stands above pretty much everything else and his is pretty shit. Which is why he will never be on this channel.
My DAM constantly drops from 1.000 on my vb and i have tested it and it is not a fuel issue. The only mod i have is the accespoort itself, and i have noticed the dam drops mostly when i push a little too hard on the throttle at 1.5-3k rpm in 5th and 6th, and on uphills. My feedback knock value gets pretty high whenever i drive lightly in a high gear too for some reason. Does anyone know if i should be concerned?
My feedback knock reaches as much as ~-7.00-8.50 whenever I'm on the highway cruising
@@Andrew-ph3tp yea that feedback knock is actually quite high. I would suggest getting in touch with a tuner and seeing if you can get an evaluation and possibly a tune. Something is definitely not well there. Having just the AP the only thing we can blame is fuel. Otherwise we would have to blame the car itself, which I hope it's not 💀
@@HeavyMetalWRXI will, ty for the advice 🙏
Definitely should not be at 1.5-3k rpms in 5th and 6th gear. Those are your overdrive gears. You only ever want to touch those when you are on freeway or highways. Usually 50-60mph and up. You are bogging you engine with that little RPM and that high of a gear. 6th gear should really only be 75mph or higher. Never WOT (wide open throttle) in 5th and 6th gear.
WOULD LOVE TO HEAR ABOUT HOW ALTITUDE SPECIFICALLY EFFECTS THE TUNE..ALSO HOW DO THE ECONOMY TUNES WORK IN A NUT SHELL? REALLY INTERESTING TO HEAR HIS APPROACH AS OPPOSED TO SOME OF THE SHENANIGANS I WITNESSED WHEN EJ'S FIRST STARTED HITTING THE DYNOS BACK AROUND 2003 2004
That's a good one. We can cover turbo efficiency, raising the boost and also how your elevation plays into all that.
Has anyone ever asked about rev matching through the tune?
It's not possible to do through a tune alone.
czcams.com/video/bG985c4YhFs/video.htmlfeature=shared
What is that sound? Like a ticking
Is it the clutch?
I love Graham... But bro needs to get better with emailing back on time 😅 I wait weeks between emails.
I get that! If you watch my video on his shop in Iowa you kind of see why. He runs a lot of different things. At first I also was in the same boat but after seeing how he runs around all day wearing different hats I cut him some slack 😂
@@HeavyMetalWRX Haha I mean I understand why, it's just frustrating is all. I wish he could clone himself
People bogging a launch is the reason behind every single transmission failure in these cars. Every. Single. Time.
Im ganna be honest broski... this is ganna be a bit of a longer comment/ question. Im not sure so I'd like to know, should i be worried?(south park reference 😂)
i havent watched the whole video YET, but if you don't already address it here I'd love to get your opinion (or maybe even the objective truth). Before my current 23 premium i had an 2011 hatch which never dropped D.A
M under 1.00. And it was a big no no if it did, from what others told me and research backed up. My 23 is constantly dropping to .5 or .650 and it'll take days for it to climb back up to 1.00. It'll usually drop randomly while cruising in gear with light throttle somewhere between 2500 & maybe 3300. Normally I'd try to stay out of boost with subpar d.a.m but the only way it gets back up is doing a few 3-6k pulls. Im guessing during the pulls the ecu is relearning?
Should i start to worry?
If i try to drive normal, which for me is around 2500-3000, it'll never go back up. I get the "regular" 1.05 and occasional 2.11 fbk and 1.05 fkl. Never hear actual knock. It's pro tuned for 93 with just a perrin intake and afe catback. and my tuner who I've taken it back to, told me it's normal and it's "just doing what it's supposed to do" but something isn't sitting right with me.
It's noticeable when the DAM drops and only boost ~11 psi. Doesnt drive the same and feels sluggish.
I also have DMAN's stage 1+ etune/ots tune and that never drops my DAM.
I guess my question is, should i start to consider the possibility of beginning to worry?
I don't think there's any more room to not be considering the importance of beginning to start the process of conceptualizing the thought of starting to worry. And the time to do so is..... very soon?
Watching the whole video now. If this is addressed, ignore everything.
Dude wtf 🤯🤯🤯 you guys covered literally every question I had. I mean, it's almost creepy some of the questions and comments I made are word for word. I swear I didn't watch it before I typed that up. Just finished watching. Such a good video and absolute gems being dropped much like my DAM 😅
If only all fuel was of great quality
use at your own risk lol