NismoPC said:Usually when you modify the car in such a way that it effects air flow, exhaust, air/fuel mixture, timing, etc. Just allows the ECU to re-learn the changes and acknowledge the changing.
Just good practice when installing an intake, header, exhaust, cams, advancing the timing, etc.
I installed new spark plugs, and didnt push all the way on one of them, after I resolved that problem, the check eng. light came on. I installed new plugs, and the light is still on, so I need to reset my ECU.g20t94 said:I was able to resolved my engine light freakin' problem by resetting my ECU. I thought I had to replace my EGR valve. Before you go into conclusion that it was your EGR or any possible problems, make sure to try resetting your ECU first.