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thats a good sounding sixer... id post my buds but it might get taken down.. street racing in mexico... go to youtube and lookup my profile. he races a 08 civic si and waxes his ***
If post up exhaust of my car but I can't via the phone app. I have a O/R pipe and incinerator mufflers. I really want a catback instead of a generic brand muffler. X_X
Haven't really looked into it. Since i haven't ran into the issue. My guess would be fuel pooling in the intake and then something causing predetonation in a cylinder