I been trying to get this my exhaust rasp gone for the longest time. I currently have Berk HFC - Manzo Y-pipe - 2.5in custom piping - 12in resonator and Tanabe Medallion exhaust. Even before the custom piping there a loud rasp to the exhaust. Is there any solution to this? I like the low rpm sound but anything after 2.5k it rasp like a rice rocket.

 

Swap out the berks for Fast Intentions resonated HFC and that might help a bit..with the noise not your wallet.

 

Add vibrant ultra quiet resonator in place of bottle type res.

 

Motordyne XYZ pipe with resonator.

 

vibrant resonators will safe you. I have 3 of them.