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Anyone TIRED of RASPY EXHAUST!!!?????

This is a discussion on Anyone TIRED of RASPY EXHAUST!!!????? within the General Help forums, part of the LSx Technical Help Section category; What up LS1's........OK so I've driven around for about 3 months now with my Pacesetter Ceramic Coated LT's (no cats) ...

  1. #1
    Member jb3golf's Avatar
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    Anyone TIRED of RASPY EXHAUST!!!?????

    What up LS1's........OK so I've driven around for about 3 months now with my Pacesetter Ceramic Coated LT's (no cats) and Corsa catback. I noticed that without the cats on the exhaust was extremely raspy....Has anyone experienced this and does it ANNOY YOU???????

    FWIW I just had two high flow converters installed and I must say ALL the raspy sound is gone.....I swear the decibel level must of decreased by at least 2 levels AND the crazy fumes that always choke me to death upon start up are gone. It's great...........Thoughts???????

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by jb3golf View Post
    Has anyone experienced this and does it ANNOY YOU???????
    Nope.

    No cats, true duals, Magnaflow mufflers.
    I have no idea what this rasp is.



    Although I recall it being REALLY bad....even with cats when I had my loudmouth.

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    Junior Member flotty's Avatar
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    I Have LT's with no cat, and magnaflow catback as well, and no troubles here.

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    Member jb3golf's Avatar
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    Quote Originally Posted by flotty View Post
    I Have LT's with no cat, and magnaflow catback as well, and no troubles here.
    Hmm.......I've heard those with magnaflow exhaust don't seem to experience as much "rasp" as others.......thanks for the reply....

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    NY Representative basballny2's Avatar
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    i have LT's no cats and SLP exhaust but replaced the SLP resonator with a magnaflow bullet muffler and no rasp here

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    Join the PHK @ thephk.org Sommer86@6LE's Avatar
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    Dyno mouth here (loud mouth w/ a dynomax bullet) and a Magnflow Y merge. TONS OF RASP!!

    As soon as i installed my 2 $37 ebay cats this week, no rasp at all!!! None! It all went away. I'm the happiest guy in the world..... except that i bought 402 today and now need to figure out my exhaust options again, haha.

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    Member c5z28's Avatar
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    Cats go a long way to clean up the cars tone.

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    Moderator Cutlass's Avatar
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    Quote Originally Posted by jb3golf View Post
    I noticed that without the cats on the exhaust was extremely raspy....Has anyone experienced this and does it ANNOY YOU???????
    YES I'm annoyed with my rasp. Kooks LTs, ORY, Borla adjustable catback

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    NY Representative Vertiviper's Avatar
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    Quote Originally Posted by basballny2 View Post
    i have LT's no cats and SLP exhaust but replaced the SLP resonator with a magnaflow bullet muffler and no rasp here
    You'll get the rasp after a tune..we all do.

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    Veteran Hi-Po's Avatar
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    No rasp at all whatsoever with my setup. Kooks longtubes, 4" exhaust and a SpinTech.

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    Exalted Cyclops 67CamaroRSSS's Avatar
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    2002 Z28 A4 NBM
    Sadly now demodded :(

    No rasp here either. See sig for exhaust details.
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    2002 Z28: NBM/Tan, MTI smooth lid, smooth bellows, !AIR, !cats, 1-3/4" QTP SS LT's, 2-1/2" TD's with X-pipe, MagnaFlows dumped at axle, custom welded SFC's, MidWest Chassis body mount adjustable T/A, 3400 stall, 3.23 gears (was 2.73). Tuned: 343rwhp/357rwt (before TD's). Best: 12.559 @ 108+, 1.73 60' @ 3500' DA w/MT ET Street DR's.

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    Join the PHK @ thephk.org Sommer86@6LE's Avatar
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    Quote Originally Posted by Sommer86@6LE View Post
    Dyno mouth here (loud mouth w/ a dynomax bullet) and a Magnflow Y merge. TONS OF RASP!!

    As soon as i installed my 2 $37 ebay cats this week, no rasp at all!!! None! It all went away. I'm the happiest guy in the world..... except that i bought 402 today and now need to figure out my exhaust options again, haha.
    edit: I've got Kooks SS LT's as well.

    Quote Originally Posted by Vertiviper View Post
    You'll get the rasp after a tune..we all do.
    Not me. I had tons of rasp BEFORE my tune. Then the tune knocked it down a bit by tweaking shift points.

    Quote Originally Posted by c5z28 View Post
    Cats go a long way to clean up the cars tone.

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    Slow'er'Ass Mr. Luos's Avatar
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    Moderator Cutlass's Avatar
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    ^^was that a dual exhaust with cats or a ypipe exhaust?

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    I don't sell out! blackSS01's Avatar
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    Hooker LT's, Texas speed ORYP and Magnaflow catback with tons of rasp I also have alot of valvetrain noise since the H/C But the power is worth it
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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by Cutlass View Post
    ^^was that a dual exhaust with cats or a ypipe exhaust?
    LT's, cats, y-pipe, loudmouth.

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    Member jb3golf's Avatar
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    OTE=basballny2;2338871]i have LT's no cats and SLP exhaust but replaced the SLP resonator with a magnaflow bullet muffler and no rasp here[/QUOTE]

    I'm assuming it had rasp before you changed to the bullet muffler???

  18. #18
    Member jb3golf's Avatar
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    Quote Originally Posted by Sommer86@6LE View Post
    Dyno mouth here (loud mouth w/ a dynomax bullet) and a Magnflow Y merge. TONS OF RASP!!

    As soon as i installed my 2 $37 ebay cats this week, no rasp at all!!! None! It all went away. I'm the happiest guy in the world..... except that i bought 402 today and now need to figure out my exhaust options again, haha.
    Nice!!!! Sounds like we had similar experiences.........It's amazing that all that rasp is gone from just 2 $37 dollar high flow cats........ha ha.....

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    Member jb3golf's Avatar
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    Quote Originally Posted by c5z28 View Post
    Cats go a long way to clean up the cars tone.
    Yeah, and the smell!!!!!!!!!!

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    Member jb3golf's Avatar
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    Quote Originally Posted by Cutlass View Post
    YES I'm annoyed with my rasp. Kooks LTs, ORY, Borla adjustable catback
    Yep....after while that rasp just gets annoying! It makes our LS1 world beaters sound like they are constipated.....not cool...

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