Join Date: Mar 2002
Location: Crestview, Florida
Less restriction=more horsepower. It's true that too little backpressure will hurt your torque, but unless you're running open headers, I seriously doubt that you have to worry about that. I actually ran a conventional exhaust system with no cat and a low-restriction muffler for a while and felt a nice increase in power, but my girlfriend *****ed about the raw exhaust smell so I put a low-restriction cat on it and it cleaned up the smell nicely with very little decrease in power.
Currently an '86 CJ-7 and a '77 CJ-7 Golden Eagle---#4 and 5 following a '01 Sahara, '90 Sahara, and '85 CJ-7....