JustinL

How much hp can i expect to get by removing the cat? And how loud will it be? also how do you roll your fenders? someone told me to do that to lower my rims into the fender wells without shelling out big bucks for flares.
thanks

underrated99si

3 or so HP from no cat but dont be a jack *** and run a testpipe on the street we love to breath

White Lightnin

yeah!. When I was 17 and dumb. My buddy bought me a straight pipe for my bday and put it on when I was changing springs. i reall y didnt want him to, but he was all about it. Anyways. It smoothed out my powerband but I changed it out after bout a month. Just get a highflow cat.

hondachick81

...like me??
and I doubt if you'll get 3 hp from it. I have an I/H/E and my hp to the wheels is only 105.9.
I don't really think it does much, maybe flows a lil better and definately makes it loud as hell. Just a nice clean flow with a header and cat back. I'd suggest a high flow cat, just so you don't have to deal with stinky exhaust and a CEL.