okay, got a custom tune by a knowledgeable member, runs GREAT. but p0172 pops up every now and then. I know it can't be running rich! I was before and I know how that feels (like it's going to die and ****). I have an ebay intake, maybe maf sensor? mods are in my sig.

before the tune: I installed the intake...ran FANTASTIC (even though I was running rich), then it took a turd, ran like crap and the code popped up.

I may have answered my own question, but what do you guys think?