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slp power pak

This is a discussion on slp power pak within the General Help forums, part of the LSx Technical Help Section category; Hi all, this is my first post, but I have been reading this forum for a long time. I have ...

  1. #1
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    1998 Formula

    slp power pak

    Hi all, this is my first post, but I have been reading this forum for a long time. I have a '98 formula with 67xxx original miles. I am ready for upgrades!

    I am considering the SLP performance pack (350hp) including the lid, cold air intake, smooth bellow mod and the loudmouth II catback system for ~ $700 from their website. Is this pak worth the price?? How do the loudmouth II's sound?? This will continue to be a daily driver but with upgrades.

    Looking for your professional opinions....

    Thank, Mark

  2. #2
    Slower Than a 3rd Gen juiced99ws6's Avatar
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    Mystic Teal
    99 Trans Am & 01 CBR 929

    I can let you know what it sounds like with LT headers and ORY.

    http://video.google.com/videoplay?do...93645542&hl=en

    http://video.google.com/videoplay?do...33519440&hl=en

    as for the price.. Its not to bad seeing as it comes from SLP but you could save a little money just going with the LM, SLP lid and K&N filter. you don treally need the bellow and you can mod your intake box for free. I believe there is a write up somewhere on here

  3. #3
    Slow'er'Ass Mr. Luos's Avatar
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    Not worth it.
    Plus...the 350HP SLP claims isn't at the wheels. It is flywheel.
    And the LS1 makes that at the flywheel stock.

    Loudmouth is a good catback....IF you plan on not modding anything else on the exhaust. Otherwise...get something else. With headers my Loudmouth sounded horrible...so bad I got rid of it.

    Smooth bellows are an appearance mod. No power gains.

    Lid is a good thing and the only part I would consider buying from SLP.
    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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  4. #4
    Senior Member Danger731's Avatar
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    free mods, do the fernco mod, 8 bux at home depot or 60 bucks to SLP.

  5. #5
    Member bevenue's Avatar
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    Quote Originally Posted by Familybird View Post
    How do the loudmouth II's sound??
    Here is a web site of LS1 sounds. It gives you an idea of what they sound like. http://www.ls1sounds.com/
    [SIGPIC][/SIGPIC]
    SS #2988, A4, Navy Blue Metalic, 335HP Dual Dual Exhaust, Chrome 10 spokes, Floor mats, Dash plaque, and SS Grille
    Best ET 13.08 @ 106.1, 2.00 60', with SLP lid

  6. #6
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    Thanks for the input guys. Sounds like just because it comes as a package doesn't always mean the best deal. Looks like I'll shop a bit more. I am definately looking at the lid and a catback exhaust. I didn't want the exhaust to be "raspy" and I never heard the Loudmouth II's.

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