I had a question about straight pipes. My stock cat seems clogged because it smells like crap (rotten eggs) when my car is in neutral or even moving. If it was clogged, then I was thnking about just straight piping it. My question is, does straight piping help me gain HP or am I just better off waiting and getting a high flow cat? Any advice would be very appreciated. Thanks.

 

Keep it leagal and keep the cat.

 

A Test Pipe does give yeah three thing, some small amount of HP, extra noise, and a BIG fine if caught. Youe choice.

 

hm...ic. but what if I get a high-flow cat. Would the cops hassle me about those? Fines?