Hey guys what's up!? My name is Casey and I have a 2006 cobalt ss/sc. I have upgraded my car a little bit and have been having some issues that I can't seem to chase down, hoping you all could maybe help. My CEL intermittently comes on and goes off, well today I had my OBD2 scanner on it cause the. CEL light came on showing a p0171 code and on my scanner I noticed my STFT was at 0 and the LTFT was at 19. I doubt that's good and was wondering if anyone else has experienced something similar? Thanks!!
as far as upgrades I have a Injen CAI, 42lb fuel injectors, 3.0 supercharger pulley, zzp adjustable tensioner, zzp shorty header, zzp catless DP, zzp catback exhaust, zzp tuned ECU for the injectors, billet front Trans mount, billet rotated rear Trans mount, also billet engine mount but if I put the engine mount on it causes my car to start misfiring from how stiff it keeps the engine, not sure what that is either..

 

Welcome!

 

Welcome , will give you same advice I gave someone else earlier. Find yourself a respectable tuner in the area and they will tell you a lot more than a scanner. its worth it in the end. I used to drive or tow mine 06 Balt 2.5 hrs just for a good tune. They should be able to help you 100%