bmontalban

anyone have dyno numbers on just cats alone? I'd love to hear it in person too, if one of you guys have it done in the LA/ Valley area.

gonzales25

I dont have any documented gains..but it feels better then it did before. I replaced my 2nd cats with an x-pipe. I have been meaning to get back on a dyno but havent had the time.

bmontalban

how much louder is it now? of the shelf xpipe, or full custom?

gonzales25

At idle it sounds quiet, but when I get on it it screams pretty good. It sounds more european I think not loud like a mustang or cobra. Magnaflow x-pipe and resonator delete. When I first start it in the morning it gets really loud, but then it warms up and quiets down.

bmontalban

Anyone in LA area with the delete? i would like to hear it before i go hacking away.

MB_Forever

It will be a little bit louder but not by much. If you want more sound then take off resonator. The car will become incredibly loud (maybe too loud for some). The good thing about the secondary cat delete is that it is an easily reversible mod. If you don't like it, you can simply switch back to stock.

You will get better flow in the back section of the exhaust without the secondary cats. If I had to guess I would say maybe 5 hp gains or so

bmontalban

resonators already off! looking for bit more bark when i have my foot punched through the floor. that and a bit more top end for all my buddies with m5's going with a magnaflow x pipe if/when i do it. the guy that did the resonators said he'll do it. $250 with xpipe included.