Just had the car switched from speed density to mass air and am happy overall with the improvement but the idle is still kinda rough when the car is cold. Not to the point where it's undriveable but it stumbles first thing in the morning consistently when I leave for work. Engine mods are CAI, e-cam, cobra intake, offroad H and cat-back. Previous owner had indicated it may have one bad O2 sensor and I never got around to replacing it - do they play a large role in the mass air system?
Also seems to idle really rough if I've been driving for a while, shut it down (for gas or whatever) and then start it back up. Not sure if the two issues are related...maybe vapor lock on this one?
Somewhat tough to diagnose over the computer but any help would be much appreciated.
Thanks
Also seems to idle really rough if I've been driving for a while, shut it down (for gas or whatever) and then start it back up. Not sure if the two issues are related...maybe vapor lock on this one?
Somewhat tough to diagnose over the computer but any help would be much appreciated.
Thanks