Hey, my car seems to be sounding a fair bit more "f@rt" then other cars with the same mods (pacie 4480's, redback 2.5", k+n) i just want it to sound a bit deeper and with a nicer tone.

It also seems to sounds a bit more "airy" like theres a leak or something. Im pretty sure the previous owner gutted the cat too which will be checked out, whether that affects anything.

When i get the cat done should i get them to check for anything else, im trying to get the car running a1 again.

Its probably just the cat!

The only other thing to do is check for leaks.

when you get the cat have them fit a small mufler in the tail pipe. that will take care of the f@rt noises.