Integralover, you say that there is a loud backfire like sound produced from the exhaust with your test pipe. Is it really that bad, like as in annoying? Cause as of right now, i have DC headers and a SRS tailpipe, and thats why i am asking about the striaght through pipes cause i wanna fully trick my exhaust to be less restrictive. If the sound is more of an annoyance, do you think it would be wiser to get a high flow cat, (which is still illegal) to reduce the backfire noise?