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SLP Loudmouth I or II

This is a discussion on SLP Loudmouth I or II within the General Help forums, part of the LSx Technical Help Section category; Hey, Im new here and I just bought a 98 Trans Am auto that is totally stock. Eventually im going ...

  1. #1
    Junior Member 79JON's Avatar
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    White
    1998 Pontiac Trans Am

    SLP Loudmouth I or II

    Hey,

    Im new here and I just bought a 98 Trans Am auto that is totally stock. Eventually im going to put on the normal mods like exhaust, airbox, chip, etc. I dont plan on putting headers on and I plan I keeping the cats. My question is im thinking of going with the SLP loudmouth catback exhaust but i dont know what to get, loudmouth I or II. Ive heard from a few the Loudmouth exhaust are to raspy with headers and no cats. But what does it sound like with manifolds and cats on.

  2. #2
    Member BADBLUE02's Avatar
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    blue
    2002 WS6 Trans Am

    LOUD! I had a set on my car for about a week and , took it off. It sounded good at idle and WOT. During normal shifting it was very raspy between 2500 and 4000 rpm. I do like the sound of the Loudmouth 2. It's loud too but, doesn't seem anywhere near as raspy.

  3. #3
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    red
    98 camaro z28 m6

    mine http://videos.streetfire.net/video/3...5D37888CA9.htm

    and im geting ready to install edelbrock long tubes with out cats

  4. #4
    Junior Member ntymd8r's Avatar
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    Red
    2001 Chevrolet Camaro Z28

    The original Loudmouth, all the way! Mine isn't raspy at all, guess it depends on your engine if it likes it or not. I don't plan on changin headers and no cats though...sounds awesome from start-up to WOT! Neighbors probably don't appreciate it at 4:00 AM.....but.....too bad!!!
    2001 Chevrolet Camaro Z28, M6, Eibach Pro-kit, BMR STB, BMR Adj-PHB, BMR RB's, BMR SB's, Bilstein HD's, K&N, SLP LM, SLP Y-Pipe, SLP Intake, Predator Custom Tuned...

    Treat her well and she'll put a smile on your face every time you get on her!

  5. #5
    aka Silver6speed Mike's02Z28M6's Avatar
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    02 Camaro Z28

    Original LM will drone you out. Mine has a Bullet replacement resonator which lowers the drone and I still want to change it. Caveat, if it's not a daily driver and u like it REAL loud, do the original.

    Haven't heard a LM2 but have only heard good things about it.

  6. #6
    Senior Member Danger731's Avatar
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    99% don't like LM 1 with headers so ....
    04 C5 A4 Torch Red

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  7. #7
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    Loudmouth 2, had them on my fbody, they sound awesome all the way from start up to WOT, i dont think they are raspy at all.
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  8. #8
    Story of My Life!! BIG D's SS's Avatar
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    Black, Blue
    07 TBSS, 07 GSXR1000

    Mine is loud and nasty with L/T's, ory pipe, and L/M is way to loud. I'm going to put a Borla XR1 race muffler in it just to take some of the rasp out of it. Other than that I love the sound.
    3 inch Chambered Catback.

  9. #9
    Modding is an Addiction bww3588's Avatar
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    Quote Originally Posted by 79JON
    Hey,

    Im new here and I just bought a 98 Trans Am auto that is totally stock. Eventually im going to put on the normal mods like exhaust, airbox, chip, etc. I dont plan on putting headers on and I plan I keeping the cats. My question is im thinking of going with the SLP loudmouth catback exhaust but i dont know what to get, loudmouth I or II. Ive heard from a few the Loudmouth exhaust are to raspy with headers and no cats. But what does it sound like with manifolds and cats on.
    from personal experience, it sounds like a hard ass with manifolds and cats but when you get headers and no cats it sounds like an old man coughing and hacking. its loud as hell with manifolds and cats.

  10. #10
    I went to Playboy Mansion FantaZGuy28's Avatar
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    YJ
    04 GTO M6

    I love my loudmouth, I got a custom Y pipe put in and it got rid of some of the rasp.

  11. #11
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    black
    2000 camaro ss+ 1987 GN

    With headers+ cats my camaros too loud+ drones at around 2000RPMS with the 1s. I might try the y-pipe trick.

  12. #12
    Junior Member
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    Silver
    1997 Pontiac Firebird

    Orig Loudmouth sounds great with no headers... leave cats on you need a little back flow, the exhaust will have no backflow!! when you get on it, it will scream....but when you are not on the throttle its not that loud ...and not that raspy at all!!

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