do you think you'll see better results with JUN cams done?

:iagree:

Dynotronics? Any insight here??

I think if you get some improvements with tuning it on boost, that would really motivate some peeps. :tup:

Has anyone read this thread? And not just the last few pages? Vvel has been played with back in Decemberof last year. Not sure why anyone is thinking this is new stuff. Video out n everything with a 370 sounding like a muscle car. So it's safe to say that since December of LAST YEAR, nothing has changed from Uprev or ecutek.

Was the vid on this thread ? I've been following this but may have missed it

Here you go.

Holy !@#$%^&*

Crap I'd do it if its safe just for the sound LOL an of course some WHP gain :)

Sounds like it has a mighty big cam in it!

Sounds like my old small block 350 ;)

I showed it to a co-worker and he said it sounded like a tractor.... I slapped him immediatley.

This vvel adjustment was done with Uprev btw.

whaaaa!!!

gee it all you want to do is make your car sound like an old truck, that's easy.

BTW, that's not VVEL but more VVT with WAY too much overlap down low.

As I said, we have not seen any real huge gains on the dyno, yet.

BTW, yes you can change the vvel with uprev, problem is, you have no idea what it is you are really changing, and not all of the tables are even defined with that sw. I try not to do stuff by wild assed guessing. If we can't repeat it, and back it up on the dyno, it does not go into one of our files. I really don't like to blow stuff up, it hurts my feelings!

Hmm well said. I called you guys last week for a quote. Very knowledgable.

ty! we don't know everything, and we try to be honest about that. And if we are not learning something every single day, I think of it as wasted

Do you think there's gains to be made dialing out some of the overlap on boosted applications?

Yes they are ;)

Joe is extremely knowledgeable. I trust him more than I trust my wife.

Well not really, but you get the idea....haha.

It would be interesting to see what gains can be found, if even relatively small, on an NA car with VVT tuning. Intake, headers, exhaust -- I'm sure playing with valve overlap will net at least some power, or at least I'd be really surprised if it didn't.

There's allegedly room for more lift too though, based on some old charts posted on another Z forum -- are the lift tables some of the undefined (or at least not clearly understood) tables?

Ive heard the FRS guys make some GOOD gains tuning this?

If you don't burn down the car

Any updates, Dynotronics, anyone? Has this actually been cracked, can we get more information on this? Very interested :)

Yes and no

More testing to come soon


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Update: Finally had VVEL tuned on my car -- details here http://www.the370z.com/south-east-re...ml#post2771262

Short version is: Definitely worth it provided you have done all the other N/A breather mods :tup:

Yep, JTran has been tuning the VVEL for sometime now! Top end gains are impressive, especially on boosted applications! UpRev has come a long ways.

Ah, but evidence of N/A gains has not been clear, at least to the best of my knowledge, until now :tup:

Or, if already known, then I offer another set of datapoints to confirm :D

isnt the VVEL already very close to optimum (or shouldnt it be) unless you are changing the exhaust camshaft? it would be strange for nissan to put in so much effort to create this VVEL thing and have it on the market with messed up settings?

it will be interesting to see what kind of gain can be had using longer duration/high lift exhaust cams.. and make it would sound better too! :D

I gave up on informing the forum about VVEL tuning a long time ago. Glad you had success, numbers looked good!

UpRev has changed a lot since I started this thread years ago!

VVEL doesn't know what mods you have on your car, NA or FI, playing around with it a bit can help!

this almost make me thinks about re-swapping the VVEL back in the Z .. lol

Pretty damn impressive jordo.

Do you know exactly what was changed and by how much?

While this is great news with nice results, I'm still a bit nervous about what the safe operating range is before the valves decide to meet in the middle and have a catastrophic party.

Not sure how this adds more power considering Nissan makes the GT-R but subscribed for curiosity

:confused:

What does Nissan making the GTR have anything to do with adjusting VVEL to make more power?

In a simple way.
Think of this as being able to add a better intake cam to the car, but by doing so via tuning software. It gets more complex than that and some goes above my head.

My thinking is that efficiency is maximized and there is little to no room for improvement. Maybe there is for FI

Jordo's dyno results prove the exact opposite, and he's not FI.

Well the debate has always been, the system is smart and very efficient for the OEM engine/exhaust setup but does it adapt when upgrades are added (NA or FI). I think between O&G (FI) and now Jordo! (NA setup) we can see there is room for improvement via software tuning when you start to modify the car greatly, potentially not when you just add exhaust or intake but maxing out NA upgrades.

Is this tuning capability generally available in UpRev or is it still beta? Reason I ask is my car will be getting tuned for FI in the near future.