I have a crazy idea...
 

Just wondering, but is the VVEL ECU truly a separate unit?

If so, has anyone thought about unplugging the Nismo one and plugging it into a non-nismo Z to see if it affects output on a dyno?

Yes, a bit of a PITA... but really, if it just unplugs from a couple of connectors like any other ECU, it's really not THAT hard to test out...

Anyone feeling adventurous :stirthepot:

I was thinking this too, it would also put to rest once and for all the debate over what contributes to the higher power output of the Nismo. BUT, I would love too see how much a Nismo VVEL ECU would cost if that shows any gains or whether you will need to retune the non-Nismo car.

^^^ Exactamundo!

You stay the hell away from my car Jordo!
Don't be gettin any ideas.



:p

Bwahahahahahahahahaha! :roflpuke2:

I just want to borrow it for a minute.... :stirthepot:

I love the idea of trying it, but I do find it hard to believe it would work without a retune, which obviously defeats the purpose.

yeah, just a minute eh??

oh btw man, got a baseline dyno done (made a thread yesterday w/all the info in the nismo section). I don't have the graphs yet but I am going to get the shop owner to email them to me. I'll get them posted up once I do.

Made pretty good numbers, more than I was expecting.

Right.

Which is why you swap it with someone who has Uprev!

This is the one factor that can't be tuned... swap the VVEL tune and what will we find?

You guys make sh!tloads more power.

Comapre and contrast...

http://www.the370z.com/members/jordo...r-stock-zs.jpg

Here, the other two have a bunch of bolt on's plus uprev tune...

http://www.the370z.com/members/jordo...ned-modded.jpg

Green is me (take that, Nismo!!!!) -- but it took intake, CBE, TP, AND a tune!

You guys CLEARLY have a big leg up that is not easily accounted for by just CBE, fuel and spark!


If a dynojet, would you share the drf's with me? :)

a better simple solution would be to have a nismo owner and datalog the VVEL during a pull 3000to red line and compare it to a normal 370z ... with Uprev , i dont know about cobb functionality

It's a great idea Jordo, I'll give you a credit for that!

but see, Its not that easy, even if its just plug in, from where we gonna find a nismo Z that are willing to trade stock VVEL with their Nismo VVEL?

I can't wait till GTM release their VVEL controller already, My credit card is waiting, waiting and waiting....

same here...even if it is just 10-15rwhp....i just hope for the love of god that its not priced above 500...that will be redicules

I think it will be little bit more than 500 but I'll be glad if its below 500!!

GTM com'n we need more power already!!

If the test car is already tuned, it would still be fair. Plus, if it really is a different VVEL tune, you should still see gains but I am not sure how much it would affect fuel trims, timing, and A/F.

Yeah, but that's less fun :icon17:

Also, I don't know that anyone knows what the values mean -- but yest that would be good too!

Details!

I'm pretty sure someone tried this already and saw exactly 0 gains from it.

you can read the vvel in degress of activation its not hard to see the difference with Uprev.
if there is a difference then we should be able to come on a conclusion that they tuned the vvel on the nismo.

Okay, I'm sold on this admittedly less crazy idea.

So... who will do it? :nutswinger:

I can probably get OEM VVEL data in due course, so all we need is a Nismo-er...

ohhh this just got intresting...in for results

i can also provide my log :)

That would be bitchin' :tup:

We should probably also get data from a MT... any volunteers?

What -- really? Someone swapped in a Nismo ECU?

Again, is the VVEL ECU in the same box or not? If not, maybe they only did half the swap???

subscribing for info.

Wow -- I start great drunken threads!

the VVEL actuator motor are connected to their Module which is then connected into the ECM...

but no one knows what unit does what and how...


edit ; i doubt someone just swaped a Nismo Ecu into a normal 370z because its a bit more complicated than that

indeed lol

You can't swap the ecu as the key is programed into the ecu plus the vin number. This a possibility if there is a second ecu just the vvel system.

If anybody runs across a cheap Z ecu let me know, I would love to play around with one and see what's going on with it.

Really -- now that is interesting. So you can't just swap out the ECU? :confused:

Drink more man, you have some good ideas. :tup:

thanks for posting those dyno graphs earlier, pretty eye opening. Seems to me like the nismos def have some ecu and/or vvel tuning going on that is pretty legit and it's more than just a cbe accounting for the extra bit of power.

What I'm really curious to see (and this is obviously a couple years out) is how they differentiate the nismo powerwise from the regulars 370's once they incorporate DI, or maybe they won't?

can not just swap the ecu has to be programed for your car. When I first got my car they had to replace my ecu and they had to load it to the car based of my vin. When I asked the guy about it being plug and play he said no that it had to be loaded, when I asked him what if he didn't he said the car wouldn't start just crank over. I don't know the truth behind this because I am sure he never tried it but maybe in there manual it i says that.

That system is in place on almost all newer cars to prevent car theft. If a thief had a key programmed with a particular ECU, they could theoretically break into a car, install their ECU and drive away with the car.

At least I believe that is the reason...

i had to have my ECU replaced, and it would have been about 1300 CD if not for warranty. So i'm thinking even if it does work, there are better things to spend the money on for more power.

Huh -- go figure.

Okay, let's get some data logs then :tup:

There is something I dont get it here.

Can you data log the VVEL system and see the different between stock and Nismo?

yes you can datalog the vvel in degres , voltage and VVEL learning parmeter if i remember correctly

That's good to know though,

When I tuned my car I didn't see anything about VVEL datalog

just to show an example

http://www.the370z.com/members/megan...el-example.jpg

gonna have to correct you on that one, i know what each unit does and how and the vvel sub box has no control over the adjustment of the system. It is a driver box that powers the motors on the actuators and reads the sensor input from the back of the heads the interperets the angle and the amount power and polarity sent to the motors to maintain that angle or change it at the desired speed according to the requested signal the ecu sends. Of course it has a few more functions and several communication lines to the ecu but on the whole the vvel "tune" is stored in the ecu. A certain company has been a little lazy about releasing the tuning software for the vvel, so i started to talk to GTM and some things will be coming together in the future

i had an idea it was something like that but no one seem to have been able to confirm it. All I know is what I see in the service .pdf , it is first connected to the VVEL module then the ECM.