Originally Posted by
rayth
does removing those cats on an N/A actually yield power gains? Or are you losing the back pressure that you want when you don't have forced induction?
I think a little backpressure in this case is optimal...
Personally I'd pop off the rear cats, leave the front cats in place and opt for something like the OBX catback. You won't gain much power, but the sound is nice and since the OBX catback has a resonator, the drone should be minimal.