What would happen if i ran a N75H vavle on a stock a4. Would it throw me into limp or would it addapt?

 

well if no one knows im gonna try and i'll let you know how it goes, if worst comes to worst i'll take it off and put it back on when i chip it.

 

it will throw your car into limp mode because it will up your boost 2-3 psi creating a lean condition. you could run a search and find that answer in a few different threads..

 

Its worth a try. It would act the same way on a stock engine that it would on a chipped engine and the H valve only adds 1 or 2 psi and reduces spiking so it would probably be alright. The stock tuning spikes at 10 psi and levels off to 5-8 psi. So a constant8-10 psi with minimal spikes shouldnt put you into limp mode. People have done it before without issues.

 

it will be just fine its not gunna go lean cuz its telling the comp theres more boost so it will compensate, its going to smooth the boost and get rid of spikes while raising the psi by about 1psi it wil make a bigger difference on a chipped car but it will be fine on a stocker