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  1. #1
    Member 98Z28CamaroJG's Avatar
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    SLP Loudmouth 1 Specs?

    Hey i have an SLP Loudmouth 1 Cat Back Exhaust on my rather stock camaro. I am very curious as to what the HP increase generally is with the exhaust. It seems to be the only exhaust i can't find the this info on haha. And any other specs or stats about the exhaust are greatly appreciated too!

  2. #2
    Consumer of kraut SiggyZ's Avatar
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    y2k 8-cylinder catfish

    The best way to see how much power increase you'll get from upgraded exhaust (as with any mod) is to do a before and after dyno tune. But, I'd say somewhere around 10 extra hp to the wheels.

  3. #3
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    10 at the most

  4. #4
    Slow'er'Ass Mr. Luos's Avatar
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    Specs include rasp and 8-10HP.

    SLP claim 25 HP by chance?
    No other exhaust offers this level of performance and adaptability!
    God I hate SLP. No other exhaust offers this level of performance???
    If by 'no other' they mean 'all but flowmaster' then I agree.
    Last edited by Mr. Luos; 01-12-2010 at 08:08 AM.

  5. #5
    Consumer of kraut SiggyZ's Avatar
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    Doesn't K&N claim an increase of 25 from their filters too?

    Quote Originally Posted by Mr. Luos View Post
    Specs include rasp and 8-10HP.

    SLP claim 25 HP by chance?

    God I hate SLP. No other exhaust offers this level of performance???
    If by 'no other' they mean 'all but flowmaster' then I agree.

  6. #6
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by SiggyZ View Post
    Doesn't K&N claim an increase of 25 from their filters too?
    I think so.
    K&N filter and a couple SLP parts and you should make 500 at the wheels.

  7. #7
    Member 98Z28CamaroJG's Avatar
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    I didn't see any 25hp from SLP about the exhaust. I really do hate their advertising, but i have to say i love the sound of their exhaust. I think thats all i'll ever buy from them haha.

    I don't think K&N advertises 25hp increase for their filters, only because they have dynocharts for most applications for a given car, showing around a 15 hp increase average for their whole intake system.

  8. #8
    Member 98Z28CamaroJG's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    I think so.
    K&N filter and a couple SLP parts and you should make 500 at the wheels.
    HAHAHA I think i'm going to die laughing!

    SLP and K&N are the most overrated brands for sure

  9. #9
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    RP

  10. #10
    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by 98Z28CamaroJG View Post
    but i have to say i love the sound of their exhaust. I think thats all i'll ever buy from them haha.
    I liked the Loudmouth....until I added headers. Then it was RASP and not much else...
    Since removed it.

    And good thinking. SLP is at the bottom of the list of places to get parts.

  11. #11
    Veteran 35th-ANV-SS's Avatar
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    SLP products will make you start "cashin checks and snappin necks" Pah!

  12. #12
    Junior Member BlackbirdRamAir's Avatar
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    How do the MagnaFlow cat-backs sound with LT's and no cats?

  13. #13
    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    I liked the Loudmouth....until I added headers. Then it was RASP and not much else...
    Since removed it.

    And good thinking. SLP is at the bottom of the list of places to get parts.
    Definitely agree there... Sounded great till the LT's... This spring I'm cutting them off for some true dual dumps.

    2018 Tahoe - Silver - OEM

    2008 Z06 - Velocity Yellow - BBE exhuast - Airaid CAI **sold**

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    2002 Z28: M6 NBM - cam and boltons - 396rwhp 357 rwtq **sold**

  14. #14
    Member 98Z28CamaroJG's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    I liked the Loudmouth....until I added headers. Then it was RASP and not much else...
    Since removed it.

    And good thinking. SLP is at the bottom of the list of places to get parts.
    So i have heard haha. i don't plan on getting LT's for quite some time but wanted a quick and cheap nice exhaust. the LM1 fits the bill i think. But other than that SLP won't be getting my money for sure

  15. #15
    Member stew215's Avatar
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    Everything said so far about loudmouths is true. I have it on my T/A (stock) and i love it... On the other hand my neighbor has it on his ss camaro with cam and headers and it is just way to loud and raspy for me ... but some people like that defining sound hahaha. Also there is no great HP gain maybe around 10?

  16. #16
    Senior Member MrMasterCraft's Avatar
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    Hmmmm..... interesting as I'm about to pick up a LM1 and put it on my Z. I've got LTs w/ aftermarket "hi-flo mini cats", so it'll be interesting to see how loud it is. Couldn't imagine it would be hardly any louder than one with stock manifolds

  17. #17
    Four Seat Vette 10spokess's Avatar
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    It's a lot louder then a stock one with stock manifolds I like mine so far it gets the job done and it sounds good

  18. #18
    Slow'er'Ass Mr. Luos's Avatar
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    This WAS my car when it had longtubes, cam, LM1
    http://home.comcast.net/~mrluos/Raspy.wmv


    Quote Originally Posted by BlackbirdRamAir View Post
    How do the MagnaFlow cat-backs sound with LT's and no cats?
    Sex!!!

    http://www.ls1sounds.com/magnaflow/m...30-80flyby.MPG

  19. #19
    Member stew215's Avatar
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    that says it all ...

  20. #20
    Senior Member tatertot91's Avatar
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    Quote Originally Posted by 35th-ANV-SS View Post
    SLP products will make you start "cashin checks and snappin necks" Pah!
    its been a while since i heard that















    PAH!!!

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