cobra

just wondering what is every one's thought on the cobra 4 into 4 slip on's..sound horse power are they good or are they junk??

Have a question about sealing the cobra 4 into 4 slip on exhaust. The pipes have small cuts on them (I'm guessing to make them fit over the header pipes easier.) Well I have an exhaust leak from there even with the clamps tightened down. I used some high temp RTV to seal them better. Now the...