Hello guys. Need your help about how to eliminate the "rasp" noise. I installed headers, test pipes, cancel the resonator and add 2" all the way from catback. I was told that installing back the oem catalyst will cancel the "rasp". Support please............

 

If you let the car warm up the rasp will pretty much go away. You can swap the test pipes out for high flow cats as well, if you can't handle the rasp.

 

Does you exhaust have a muffler? Get rid of the test pipes and get either hgih flow cats or if you if you got the cash, then get the Fast Intentions resonated high flow cats.

 

Cancelling the resonator generally means rasp..

See here: http://auto.howstuffworks.com/muffler4.htm

Test pipes may or may not contribute to the rasp- I'm running them with my stock exhaust and there's no rasp...

However, when i combined the test pipes with an after-market exhaust, there was an increase in rasp

 

Put the largest inline resonator you can fit back in the OEM location, or at least as close to OEM location as possible. The completely stock exhaust rasps when the OEM resonator is removed. I can't prove that it will eliminate all rasp, but due to it's effect on the OEM exhaust alone, I can't imagine it's absence is helping at all.

 

Rasp is your friend. Do not fear rasp. Learn to love it. Make it your own.

 

nicely said

 

+1

Rasp will reduce a bit when the exhaust warms up. It wont go completely away but it wont sound as raspy.

 

just press the cancel button

 

Don't worry about it. If you keep driving the car as is, pretty soon you will be so deaf that you hear the rasp. Problem solved. In the mean time, just crank up the volume of your music to compensate.

 

you could always get the magnaflow x-pipe, others have reported a serious decrease in rasp after installing it