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How do I get rid of rasp?

This is a discussion on How do I get rid of rasp? within the External Engine forums, part of the LSx Technical Help Section category; I have an 02 WS6 with Hooker LT's, ORY-P, no cats, and magnaflow catback exhaust. It has some rasp to ...

  1. #1
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    How do I get rid of rasp?

    I have an 02 WS6 with Hooker LT's, ORY-P, no cats, and magnaflow catback exhaust. It has some rasp to it. What's the best way to get rid of the rasp. Should I buy a bullet muffler, glasspack, resonators, etc... What's the best in terms of getting rid of the rasp and making a more refined sound. Thanks

  2. #2
    member since may 2000 nhraformula's Avatar
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    black
    2000 nhra edition formula

    get a hooker muffler like i did.
    it cuts down on rasp.
    or put on cats.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  3. #3
    Junior Member Uno99's Avatar
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    1999 T/A

    Wouldn't go with a glasspack ever. A bullet in you i-pipe will help a bit.
    1999 Pontiac T/A A4

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    Senior Member Hurley711's Avatar
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    414 RWHP 395 RWTQ
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    Agree with Form---get a weld in Hooher muffler to replace the Magnaflow. I have the same setup with Hooker CB and NO rasp

  5. #5
    Eric @ DMS
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    If you want to keep your exhaust setup then install a bullet on your intermediate pipe. This will reduce the raspiness you're experiencing.

  6. #6
    No 55mph 1QuikWS6's Avatar
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    Or you can just ditch the Magnaflow entirely and go with a GMMG. I previously had both Borla and Corsa on my WS6. Both sounded good as long as I was using the stock manifolds and cats - as soon as I installed the LT's and !cats - car sounded like a cross between a weedwhacker & a Ferrari

    3rd (and last) exhaust was GMMG - some of the best $$ spent on the car to date - love the old musclecar sound and there is absolutley no rasp.

    -Jay-

  7. #7
    Senior Member ninobrn99's Avatar
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    or get cats or get a 12" bullet. that should work...i thought magnaflow was quiet though

  8. #8
    We'll be back... GatorSS's Avatar
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    Large bullet in the I-pipe or two small bullets before the exhaust tips.

  9. #9
    Member Frosty's Avatar
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    Bullet muffler like they said.

  10. #10
    I like the way yew tawlk. Ric's Avatar
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    Hurley, I ain't ever heard of a Hooher muffler before!

    Forgive me, it's late and I'm tired.

  11. #11
    ruff ruff rotwiler's Avatar
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    LT's, 3400 stall, FIPK,CB
    2002 Z28

    Add the cats back on and rasp will be gone. The cats only take away around 5 h.p and it will sound alot better. With FLP LTs andMagnaflow catback my car had a fluttering rasp that sounded like a machine gun when I punched it and was really loud and abnoxious.

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