my car is spittin and sputterin ive changed the plugs and wires can i cut the converter off and weld in a pipe and is there an o2 sensor that i will mess up? it is a 200 grand am with a 2.4l engine

brian, May 2009

removing the catalytic converter might cause you to fail and emission or state vehicle inspection-also the oxy sensors won't send the correct reading to the engine computer-but the converter might not be the problem-2.4's have a different style module/coil pack-swapping this whole assy with a used one or from a buddys car might help to isolate the problem-an"AUTO ZONE" or PEP BOYS part store might scan your engine computer for codes for free

tedsfun52, May 2009

You can remove cat, last year not to legally have one is k reg, if yours is newer then got to have on for mot (some people remove it and replace for mot). There may be lambda sensors before and after cat, but not on it. If you look under car there may be bolts holdin it in with wires goin to them, if not poss no sensor. Some cars don't. Prob self adjusting ecu for airflow etc. Will improve bhp marginally, poss by 5 or 10, so poss not worth removing unless highly tuned. Will sound pretty loud also, and increase fuel consumption by a little. Hope that helps. :) ed

ed whiffin, May 2009