I will soon have a custom exhaust system put on my car and i was just wondering if there are any troubles after gutting the cat. Does it throw any codes? Is it worth doing... i dont care how loud it is i just want the most performance. Any real benefits from doing this?? BTW, i will have Intake, Headers, Nitrous, and maybe a cam if i can find one somewhere. Thanks.

 

i wouldnt think so....it would be just like running a test pipe...I'm using one and I dont get any codes...

Just my .02

 

Get a test pipe instead. Gutted cats sound like ****

 

I can second the fact that gutted cats sound terrible, it sounds all hollow and raspy. Test pipes are actually resonated somewhat and sound much better. Even a straight pipe section sounds better because in a gutted cat, the tube widens and then narrows again producing that hollow sound.

 

not only a crappy sound but crappy performance.. it chokes up the exhaust gasses.

 

Gutted Cats....Test pipe or High Flow, gutted is bad for performance.

 

If you decide to go with a test pipe, I have a stainless steel OBX unit that I'll sell for cheap (on the car for a week). It will have to be welded in place, though, I had to remove the flanges to get it to fit. If you're interested, shoot me an e-mail at cvcc721@yahoo.com.

 

I have gutted my cat but I haven't heard it or felt the perf. yet cuz the engine isn't totally ready (LS/VTEC), but how shitty does it sound and could u explain more in detail why it hurts perf.? Thanks.

Martin

 

you got mail

 

Open header with gutted cat = Lookofsky's car
Open header with nice big Accord cat = GSXR with a pipe

It's hard to explain the difference when you are running a full exhaust, but just please take everyone's advice and get a test pipe AT LEAST.

 

 

bah i got a testpipe off ebay for 25 bucks, works great never had any problems

 

$10 test pipe from Autozone

1 flange adapter, 1 length of pipe, 2 clamps.