Post by
Sil80315 »
https://forums.nicoclub.com/sil80315-u36835.html
Sun Mar 04, 2007 1:11 pm
after checking out this common "backfireing, sputtering at 2-3k rpm" I do believe it has to do with TPS and knock sensor. Deffenetly check out the voltage on your TPS cause even if you mash the gas..the TPS will tell the ecu that your not at WOT. also make sure you do a boost leak test. If you want I can tell you how to make the cuplair or you can just do research on how to make it
It pays off big time to do a boost leak test cause you will find a ton of leaks that all cause the car to act up, I know people that are still hunting down small leaks that you hardly even notice but it does effect your motor.
Also if you did a turbo upgrade, why would you run stock injectors? does this mean your running stock maf and stock ecu? cause 7 psi from a bigger turbo is alot differen't then 7 psi from a stock t25 because the bigger turbo moves a higher amount of air into the motor so really its like 11 psi you get from a t25 to a 7 psi from a bigger turbo.
if you want give me a shout on AIM, Ive been dealin with these problems for awhile and I know a few things i did to smooth them out.
AIM is sil80315