exhaust question?

i had a 2 1/2 in h-pipe and 2 1/4 flowmasters and tail pipes on my car and switched to 2 1/2 race bullets and dumps and it made a world of difference....it definetly felt like my car was revving better and running smoother
 
zak said:
ok i got a newb exhaust question. what is a cat back? i know what cats are but what the bac about?

A cat back is a bolt on kit that you can buy. Basically you leave from the motor to the catalytic converters alone then add mufflers and tailpipes as a kit. This way you get a little more performance and a better sound but are still emissions lega.