johnrip
Jedi Hopeful
Offline
In NY state, my car is 25 yrs old, so I no longer have to go through emmission tests! /ubbthreads/images/graemlins/cheers.gif My CAT CONV is getting rusty, and my rear pipe is bad. My question is...should I install a front downpipe (european spec or early 1976 tr7 usa)that replaces the cat, and remove my airpump? What would be the gains?