Help W Rasp

[Quicksilver]

Installed my exhaust setup last week, and it consists of this:

-Racebits headers
-Racebits ypipe
-100 cell race main cat
-Bosal cat back.
-All pieces are 304SS
-All pipes are 2.5"

The bosal appears to have 3 resonators, no mufflers. Or the rear two are extremely small, and free flowing mufflers.

The sound is very high pitched, sounds beyond awesome. Almost sounds like the V8 M3.

THE PROBLEM - The second it hits 3k, the rasp is beyond horrible. Any time you get on it, same thing.

So... What are you guys running, and what are your suggestions? I just wanna get rid of the rasp. Thx!!

 

[FokusDave]

I literally just had the same problem man. Different set up tho I have msds headers with y pipe. Have the 3rd cat in. Then had resonator removed and boy it was bad. So today put in a magnaflow muffler where the resonator was supposed to go into stock svt mufflers and sounds really nice now no rasp at all!

 

[Beans]

It'a been awhile since i've seen the bosal catback muffler sizes... Do you have a picture?

What are the specifics on the converter?

 

[captastic]

I had the same problem with a similar set-up where the PO had this tiny "race" cat on the car. Sounded like *ss. I pulled that and installed a high flow full size cat from Trubendz. Problem solved and sounded much nicer and the rasp was gone.

Easy fix...

 

[blu_fuz]

MSDS headers
Trubendz stainess cat delete
Magnaflow resonator
Magnaflow XL mufflers
No rasp

You need to get a real muffler in your system somewhere. Replacing the resonator will help some but not all of it.