Well I just got my s*** done yesterday at an exhaust shop.
2.25 wit a resonator after the cat and a magnaflow straight through muffler: Has a deep rumble to it at low rpms, not loud but I don't like noise at all so I think imma put another resonator in it
But my question now is this: how can I tune my car to get the best out of the cat back(if necessary). It might be my fuel pump or pressure regulator(gotta check), but I notice my car drives better when the tank is low (different pressure, better air-fuel ratio?) which is why I'm thinking about getting an adjustable fpr. Also have a sri