I have 1998 gs, i put a cold air intake that goes to the bumper and guted the cat... now its running like shit, it revs high but the car takes off slow, i thinks it from guting the cat from the loss of back preasure or the computer being confused, dose any one know how to fix this with out buying a new cat (there like $500)

Check your codes with a datalogger or at AutoZone. You might have a bad O2 sensor, or forgotten to plug something back in (Front O2, TPS, IAC)

Originally posted by MrEvilKurtMan
I have 1998 gs, i put a cold air intake that goes to the bumper and guted the cat... now its running like shit, it revs high but the car takes off slow, i thinks it from guting the cat from the loss of back preasure or the computer being confused, dose any one know how to fix this with out buying a new cat (there like $500)

you can get a magnaflow high flow cat for $150 at most :squint