weird sound

[Import_Beast]

my exhaust sounds like ripping paper at around 4000 rpm , even after its warm...whats the cause of this....i have straight piping and a high flow cat....also its a straight threw magna flow the street one , thanks

hector

[Import_Beast]

anyone?

[Mindless]

how long have you had the muffler? Is it possible the packing is going bad?

[Import_Beast]

only had it for about 2 months

[4-G-rim]

It could just be the way your exhaust is set up. You say you have str8 piping and a high flow cat and a sport muffler....having a "paper tearing" noise from your exhaust at a fairly decent high RPM range (7g's redline at a little over 6000...so 4000 is up there) doesn't surprise me. I hear Hondas all the time with a high flow exhaust making similar noises you have when they are up there in the RPM range. If you are not getting weird exhaust noises in idle then I wouldn't worry so much...but I would also put the car on a rack and inspect the the whole exhaust for anything wrong...in worse case, it may just be the muffler. 8)

[Import_Beast]

thanks for the info makes alot of sense...but isnt there anything i can do about it without redoing my piping or changing my muffler?

[4-G-rim]

Silencer for the muffler or adding a resonator somewhere in the piping..but that would require cutting some piping and welding the resonator.