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slp loudmouth?

This is a discussion on slp loudmouth? within the External Engine forums, part of the LSx Technical Help Section category; Does the slp loudmouth flow better and give better tq. and hp. gains than any other exhaust since its straight ...

  1. #1
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    Navy Blue Metallic
    2002 Trans am WS6

    slp loudmouth?

    Does the slp loudmouth flow better and give better tq. and hp. gains than any other exhaust since its straight through?

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

    on paper it should, but in reality, the hooker, magnaflow, corsa and borla all flow about the same.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

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    Navy Blue Metallic
    2002 Trans am WS6

    loudmouth

    thanks for the info.

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    11.9 at 118 02Ls1Formula's Avatar
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    SOM
    2002 firebird formula

    the loudmouth with headers is ridiculously loud too

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    spintech

    hey do any of you guys know anything about spintech mufflers? Im thinking about welding one on in the place of my loudmouth1. The loudmouth flows good but its just loud with no tone to the exhaust.

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    White
    1998 TA

    I wouldn't waste your time trying another bullet muffler if you're really unhappy with the sound. I tried it and eventually switched catbacks. Sell the LM and buy another catback for minimal $ outlay.

  7. #7
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
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    I used to have the loudmouth.
    Since I have owned one...it would be the second to last catback I would consider now. The last one....flowmaster.
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
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    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

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    Na

    The spintech muffler that I was looking at is not a bullet style muffler its a case muffler. It would fit perfect in the place of the LM1. They sound really good I just dont know very much about spintech and how good they flow. Before I got my loudmouth I was told it would flow better and give you more hp and tq gains than any other catback and so thats why I bought it. Im pretty sure they were right but I really dont like the way it sounds. Thats why I was thinking about getting a spintech muffler but I dont want to hurt the flow of the exhaust too much. So I was hoping someone out here new something about spintech. Im probably never going to do headers so Im just wanting all the hp that I can get out of a catback. In that case, should I just stay with the loudmouth?

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    White
    1998 TA

    Do you dislike the volume of the exhaust or the unrefined tone? You will not be able to alter the volume to a huge degree by swapping out bullets. You can make it a bit more refined but it will still be loud.

    Your concerns about losing hp are way overblown. Most of the catbacks with the exception of the flowmaster will be fine.

  10. #10
    11.9 at 118 02Ls1Formula's Avatar
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    2002 firebird formula

    are you not doing headers because of emissions??

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    na

    yeah thats why Im not doing headers. I dont really mind the volume of the loudmouth, I just want a different sound. The spintech muffler is a case style. Its only 6 inches wide so it would fit where the LM1 muffler was. I was thinking about doing that instead of buying a new catback.

  12. #12
    11.9 at 118 02Ls1Formula's Avatar
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    2002 firebird formula

    well im pretty sure you can buy a different y pipe with cats to keep it street legal, they cost a little extra but atleast you can get the extra performance if thats what your after...

  13. #13
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    Z/28 LS1

    BORLA XR-1 5" round You will be glad you did.

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    99 Firehawk convertable

    I have lts & ory with the loud mouth 1 system,it's definitely loud under a load, but at 60 to 70 mph it's not that bad, kinda has a drone to it.

  15. #15
    We're All Mad Here pinky93's Avatar
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    Onyx Black
    2002 Camaro SS

    What about GMMG???
    2002 Camaro SS - SLP # 7744
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    borla xr-1 muffler

    I know the borla xr-1 is more quiet than the Lm1 but does it have a different tone to it? Does it have more of a throaty sound to it than just a loud hmmm?

  17. #17
    I lika da Chevy's LETHALxLS1's Avatar
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    BLACK
    Z/28 LS1

    IMO the xr-1 sounds deeped without the rasp and drone. The XR-1 isnt the muffler that comes on the Borla cat back-its Borlas race muffler.

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    borla xr-1

    Do you have any sound clips of your car. All the sound clips that I find are cars that have headers and no cats so its not going to sound the same as our setup.

  19. #19
    I lika da Chevy's LETHALxLS1's Avatar
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    BLACK
    Z/28 LS1

    I will make one for you and post it by tomorrow. I have stock exhaust manifolds and cats. I mean it has a nice sound to it at regular cruising and when you get on it its plenty loud. Unlike the LM that is loud as hell even just cruising.

  20. #20
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    BLACK
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    Has a deep tone to it. I think you will love it.

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