DYNO TUNING THE NEW VVT CVO ROADGLIDE
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- čas přidán 7. 11. 2023
- Screamin' Eagle have released a base calibration for the new 121ci VVT Powered CVO Models on the Street Tuner Platform. While no adjustment at all is available yet there are still some great gains to be had.
All dyno runs were carried out in 6th gear, with Sport Mode selected & the speed sensor disconnected to allow for a full RPM sweep.
Before the Khrome Werks full system was fitted I managed to carry out some base runs in 100% STOCK form. Check that out that quick video here: • 121ci VVT CVO on the DYNO
The owner is very much OK with everything in the video & I had full permission for everything you see.
When Screamin' Eagle do have adjustment for the Street Tuner Pro it will still be limited in the adjustment range so while more power will be unlocked there will still be a LOT more left on the table for the aftermarket (when tuning capabilities are unlocked).
This new M8 platform is proving to be a great step forward for Harley-Davidson & i am very much looking forward to sinking my teeth into all the tuning & modifications that come about in time.
Thanks for watching folks. - Auta a dopravní prostředky
I’m glad you showed how restrictive those “high flow air filters” are.
Your leading the pack on these new bikes. Far out of my price range but very interesting to watch.
Thanks for watching
Pretty good numbers for just a pipe and 10 HP gain on just a filter is crazy.
I installed Screamin Eagle Extreme air filter and that made the difference on my 114 for sure!
I have the 114 m8 with a Road Skulls air cleaner it has a fan behind it it’s patented made a huge difference in performance!
Great work! Very interesting indeed! I think this motor is gonna surprise a lot of skeptics when the full tuning gets cut lose!
Absolutely!
Thank you for that info. Appreciated👍
With a real tune itll be hurting 131s feelings
Great vid , lots of potential there. Last 3 min😂 well done
Wow, quite the restriction. Interesting. Thx!
Good video , It looks like there is a lot power left in .
There is a LOT of power left on the table for sure! I can't wait to see how much we can extract
Can’t wait to see how this motor turns out with an aftermarket cam and real Dyno tuning
Absolutely! Me too!
Great work very interesting how restrictive that air filter is.
Awesome video. Can't wait to see the future upgrades you do to this bike!. Hard to believe they are 48 grand and they come with lame ass exhaust and filters...
I guess it's just for emissions compliance which Harley must abide by
Wow
Great Work....👌
Thanks for watching
Great video. I ordered my pipes at Frasers and I saw them yesterday and they are gloss black. I said to them they are not black chrome (similar to the ones that come with the bike). They are in fact gloss black and they definitely look nothing like yours. I would not mind if you can send me a good pic so I can show it to the dealers please. After seeing yours, I definitely do not want the ones they've pick up for me. I am happy to hear the wedge air filter does a great job. Also, 162? WTF.
Amazing how one lousy air filter design robs the bike of power. Definitely shows how much potential these new bikes will have. Thanks for sharing.
Thanks for watching
Great video. Can’t wait for the tune to come out. Lot of restriction from that factory air cleaner
I have khrome werks exhaust on my road glide limited. Power vision tune, Arlen Ness air. It rips😮
I love what you've done with the videos you produce. Well done!!
A little off topic here, the M8 117 upgrade to 131 ci does the have a thinner wall in the cylinder lining?
The cylinder liner naturally has to be thinner to accommodate the 4.310 bore of the 131ci pistons with the 4.500 stroke of the 114ci & 117ci bikes.
There is nothing wrong with the Screamin' Eagle cylinders. They are plenty strong enough.
@@MasterTechMiller thank you for that
Could you please mention your knowledge and experience with the cooling technologies too at some stage. Is it only cvos that get water cooled heads and can or should we be retro fitting to other m8 builds? Cool to see the vvt 121 in action. Thank you
I'm wondering if HD ever gonna introduce the supercharger they filed for patent on a few years ago. Love this new cvo, I'd have to run a velocity stack on it until I could get a better filter😂
That would be awesome if they did
Awesome video, thanks for all the great info.
Could you change the air cleaner and leave the stock pipes
What would the dyno numbers be. Do you require the SE flash or not if you run that configuration
Just adding the air filter would definitely help to give an increase in HP but the exhaust system is very restricted too as there are 3 catalytic convertors in it.
It's hard to say just how much the air filter alone would be of benefit.
The flash tune is definitely recommended when doing both the exhaust & Air filter.
@@MasterTechMiller I live in a city with noise bylaws on bikes 92db at idle and 96db at anything greater than idle
So pipes are a concern for me
Imo bikes shouldn’t have cats
General tuning question: Is the overall performance better if:
a) tune it and remove the O2 Sensors or
2) Tune it and leave the O2 Sensors in?
Looking for some advice: I had a 2023.5 CVO Road Glide in dark platinum and added the same Khromewerks exhaust with SE tuner and SE forward-facing air breather. The performance gain was phenomenal. But the bike was too loud to keep at home. I had to store it elsewhere to keep the peace in the family and the neighborhood. I just traded it in on a 2024 CVO Road Glide in legendary orange. Nutjob, I know, but it will be the last bike I own (alongside my BMW M1000R). This time around, I will be purchasing a Jekyll and Hyde exhaust so that I can store the bike at home and come and go quietly. Having made that choice, I don't think there's much I can do to increase the machine’s performance and preserve the factory warranty. But before giving up entirely, I wanted to check with you for any recommendations you might have. For example, is there a cam I can swap in without endangering the warranty? Is an SE tuner a waste? Do I need to simply wait for the warranty to expire before making any mods? Sorry for the ignorance of any of these questions, and thank you for your consideration!
There are no cams available for the VVT M8 engine as yet.
You can either use the Screamin Eagle Wedge air filter or the Heavy Breather Extreme. Those will provide great improvements.
Using the SE Pro Street Tuner to make the tuning adjustments, you'll keep your factory warranty & have some performance gains.
@@MasterTechMiller Thank you for the advice and for being so generous with your time and expertise!
I added a SE tuner, SE heavy breather and full Khromewerks exhaust with baffle inserts to my never-ridden brand new 2023 CVO Road Glide and picked up a ton of both horsepower and torque. Then I posted my dyno sheet to a Facebook group of 2023 CVO owners as what I thought was a public service, and the comments and questions started coming in. One commenter told me in not so many words that I had wasted my money on the air filter and exhaust and that the performance gains were all due to the tuner. I got started down this road after watching you change out the stock air filter for a SE wedge filter. I love the look and sound of the new pipes, but my dealer knew that my only goal was increased performance. What are your thoughts on the commenter’s view that I wasted my money on everything but the tuner if the looks and sound did not matter so much to me?
The commenter clearly doesn't know what they are talking about.
The SE Tuner is a mear 'flash tune' & provides a slight amount of additional fuel.
The biggest restrictions by far are the air filter & exhaust system.
Once full tuning capabilities become available, these VVT bikes will make so much more power than you can imagine
@@MasterTechMiller Thank you!
What was the RWHP from the factory? And would the KW baffles help make more power? I just did this exact setup on my 2023.5 CVO Roadglide because of your videos. I have the baffles but don’t like the sound.
Hell of a vid !
Saw the question asked below....but no answer. Where the mufflers running open, or which baffles were installed for the dyno runs. Great vids, enjoy the channel.
Sorry, I must've missed the comment? These are just the open the mufflers. I would've loved to try them with the baffles in
No problem.....thanks for the quick response. Just put Khrome Werks slipons on my 2023 CVO. Stock head pipe with the cat. Ran the bike with them open and lovered baffles. Nothing but my butt dyno...baffles felt stronger. Waiting for your Air filter addition video. should be interesting.
@@randywilmoth2129 Video is up. Check it out.
Miller great video thanks. Wanted to ask your opinion. Just got a brand new 24 CVO Street Glide. Had dealer put on the Rhineheart 4.5 exhaust and the tuner as you did in your video. My question is can I add the SE Wedge Filter with the flash tune already done as you did on your video? Just want to make sure it doesn’t throw AF. Ratio off. Thanks
It'll be fine to install that filter with your current setup. The tune in the bike should be able to accommodate for the extra air flow.
The closed loop section of the Tune in those CVO's is huge. It will be fine
@@MasterTechMiller thanks buddy. I appreciate the info. People around here are still a little confused on the new bikes. Wanted to double check with you. Have a great day.
@gunmastersfirearmsllc706 not a problem 👌
Brilliant 🙌👌
What is the base calibration software number?
that's what i am talking about khrome werks or nothing!
Interesting. Do you think tuning VVT M8’s will include cam timing changes in the future? Will different cams with higher lift, duration, etc make it necessary to change vvt advance/retard? If you could change VVT operation as part of your tune, how would it change the performance?
I would love to know! I'm sure the base timing table will be adjustable no doubt. Higher lift & more duration cams will definitely see a HUGE improvement
Was there a baffle insert in the exhaust? If so, which one?
I would also like to know this. Louvered or Perforated spoon baffles?
I am interested to know if you disconnected the third o2 sensor and if so did you get engine fault code
I did not disconnect it. I welded in a receiver bung on the Khrome Werks crosser pipe so the OEM installed 3rd 02 sensor could be fitted.
Other than that small modification the entire system is a direct fit.
I have a question i thought the cvo 121 makes 115 from the factory .
Or am i wrong so you lost power because of that exhaust ?
I took my water collector filter of , I have the heavy breather was loader than the pipes but now have kW slip ons sounds great goes well no tune yet , is it advisable to do the map available now or wait till they update a better map
It's totally upto you. It will make more HP with the flash in calibration. It won't hurt or effect anything if you don't so it's your call.
@MasterTechMiller thanks keep the video's on the 121 vvt coming
@@CraigHarleyglideout thanks for watching
Also, you mentioned that there are improvements on the SE tuner. More capabilities. Would it be worth it to get one for my cvo st? Or should I wait.
At this stage it's definitely worth it as there is nothing else available. There is adjustments on the SE Pro Street Tuner that will meet your needs.
@@MasterTechMiller awesome, thank you so much!
What do you think about the filter on the cvo road glide st? Are there better options?
It's not a bad filter at all. Much better than the OEM CVO filter.
The SE Wedge is my recommendation.
@@MasterTechMiller thank you!
What size is the intake manifold on these? 58mm or 62mm maybe?
58mm & the Screamin' Eagle option for the normal M8 is 64mm
What was the AFR after the flash?
Slightly richer. I will post some photos in the community section on my channel later today
the kw exhaust same as the old model?
It is the same system from previous M8 models
Any news on removing that speed limiter please ?
Other than disconnecting it (then you have no speedo on the dash) I am still unaware of it being able to be disabled as yet.
@@MasterTechMiller it’s very unfortunate. If it stays in this condition I would be mad buying a 45k bike that can’t rival with my stage 2 lowrider st117
I think I might go with regular 2024 street/road glide and tune it to my likings
Does the KW header fit both the M8 and also M8-VVT ?
Yes. The VVT M8 requires a small modification. A 3rd 02 sensor bung needs to be installed in the crossover pipe on the KW system. Other than that, it's a direct fit.
@MasterTechMiller thanks for the reply miller, is this because you're using the stock ECM setup? If you had a dynovision with target tune then would you get away with just 2 sensors?
Yes. The factory ECM calibration is setup for 3 02 sensors. 2x pre cat & 1x post cat. It's the new Euro standard for motorcycles.
When the calibration becomes fully adjustable & tunable there will be no concerns with having a 3rd 02 sensor. It will still be there on the bike but it won't effect tuning
@@MasterTechMiller There is no 3rd sensor in the USA bikes.
It sounds different than a traditional Harley. What's different is that VVT what's making the engine sound like it's running so smooth? Because it's supposed to lope and chop.
It just sounds like the motor is running a little too smooth to be a Harley. I don't like the sound of it.
You’re riding in the wrong side of the highway. Steering wheel on the wrong side of the car. Crocodile Dundee reference.
😂🤣
Awesome video! Really appreciate your information. Many are running into an issue where the bike will not start. There is a rumor that there is an ECU update but locally I have not been able to confirm this, are you seeing an update from the digital tech tool? Example of the issue: czcams.com/users/shorts40NJzEHYjEE?feature=share
I haven't heard or seen anything. Let me look into it & get back to you.
Taking the breather off is an old dyno trick. Not a real comparison. Test the wedge back to back. No way you are gaining 11hp by changing the air cleaner
As soon as I get the air filter, I will let the customer know when he can come in & have it installed. I will then test it again back to back. No tricks here mate. That is just what it did.
I guess I worded it wrong not saying you are trying to pull dyno tricks. Just saying any bike will make good gains by removing the the air cleaner. I would bet money there isn’t 11hp gain from the S/E wedge to stock. Probably be more like 2-4hp gain.
@jeremyfowler218 I do not expect the new SE Wedge filter to perform as good as running no filter either. I'm sure there will still be some form of restriction. I would like to think there will be gains of around 5 to 8 hp over stock with the wedge filter. I never said running the Wedge filter would make gains of 11hp.
WOW, Air filter SUX!💩
Remove any air filter and make huge gains, changing air cleaners isn’t gaining no 11hp
@@jeremyfowler218
Rubbish wouldn't get that much HP with just aircleaner
Um ok? The dyno doesn't lie
@@MasterTechMiller I guess so
What ac did you put on it
Screamin Eagle Extreme Wedge