Got my car back today and just drove it home, got to say the car is sweet but G352NV said that I would have to turn the VDC off when driving aggresivley as with it on it will run lean on 2 cylinders and would prob. cause detonation, but with it off it would be fine.......could anyone explain this to me and if it is true, is there a way around this or just to turn the VDC off for good.

 

i ran mine with the VDC on and off for several thousand miles without problems, i think people says it causes problems because if you loose traction it cuts fuel causing it to run lean, but im not sure if anybody really knows this for a fact.

 

That is exactly what I thought when he told me to turn it off during hard driving, traction would be the only reason why the car would go lean due to the computer taking control over the fuel delivery, the only thing I do not understand is how some guys go to the track and rev to 2k and take off with the vdc on and never seem to have an issue and others turn the vdc off.
All wierd to me.

 

From what I understand...running with it on, and getting on it and losing traction . The VDC cuts fuel...yes...but it acts just as if you took your foot off the gas . SO no damage would happen .

 

Ok, Ive heard both. I just wanted Paul to be on the safe side. I would have really hate for him to blow is motor after I did his install. BTW why in the hell would anyone want VDC on when running the car hard? This would be like hitting the rev limiter, and that slows the car down.

 

Hey Steve, I was not doubting you in anyway and I took it for a spin round the block let's just say I upset some of the neighbours...haha this thing is addictive.
I do drive hard sometimes but I must be one of those old farts who always leaves the vdc on, I need to learn to turn it off and enjoy it more.

 

Its cool, I know there has been a lot of back and forth on the subject but I would hate for something to happen to your motor. I just do it to be safe. Driving without VDC can be kind of crazy but you'll get use to it fast. Summer is almost here so this is a good time to learn.

 

I've made several posts on this topic on this board and my350z.com. Detonation is most likely to occur not under hard acceleration but on pedal lift off--that's when maximal leaning out occurs when the engine RPMs are high. Driving with VDC on mimics pedal lift off right at the worst moment--under full boost, high revs when rear wheel spin starts to occur. I never drive hard with VDC on and installed the KP Tech module to eliminate the need to remember to turn it off. Still, in slippery weather, I turn VDC on and don't drive like a maniac.

I drive aggressively at times but have never needed VDC on dry pavement since installing the Nismo LM-GT4 wheels with Toyo Proxes. These wheels stick like glue.

 

I just got my toyos installed a week ago, and what a difference from the stock tires. Love them for now, until I have to replace them.

 

...or until the EXORBITANT sound of the tires as they wear drives you mad...

 

Paul Gasparola from Avalon Racing uses Toyo Proxes exclusively on his 350Z's. He told me that traction continues to increase as the tires wear to half tread and even beyond. My own experience in the recent rains in the Northeast (sucks) affirms that these tires are incredible on wet pavement.