My 2002gt is running really rich. It smells really rich and gas mileage is terrible. My mods are fenderwell CAI, 75mm tb and upper intake plenum, o/r x pipe, catback, and diablo sport tunner. The wierd thing is I reset the computer and it seemed to run better for a while then went back to the way it was running (sluggish rich). I've monitored the TPS and ACT, cleaned the MAF, and checked for vacume leaks. Any other ideas? I'm thinking it could be the O2's, but it's not throwing any codes. I also don't want to spend a lot of money on the sensors if thats not the problem. Any help is greatly appreciated. I've been working on this for a while and starting to get kinda frustrated.