Well I replaced my knock sensor and o2 sensor and that was a huge waste of money. Knock is just as bad, and o2 reads the same as before. Also something that might be note-worthy, the old o2 was really black and you could tell it had been running rich. I checked the ground just in case, and there wasn't a significant loss in voltage anywhere on the engine. Just in case it matters my idle is pretty crappy, but I just figured that to be because of the bigger injectors. I'm leaning towards the computer now, but that is a lot of money I don't have. I'm thinking of taking out the stage 2 chip from dsmchips.com, and putting the stock one back in...What do you all think, could this possibly be the problem? Thanks again for all the good advice so far

93 Tsi AWD-SAFC I, Apexi N1 turbo back, MBC, K&N w/ hacked can,
Walbro 255, Accel wires, 650cc injectors, stage 3 dsmchip

97 Neon ACR-Stock