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Horsepower gain?

This is a discussion on Horsepower gain? within the Firebird / WS6 forums, part of the Vehicle Specific category; 98 T/A from stock manifolds with flowmaster muffler to heddman longtube headers 1 5/8 ptimary 3 in. collectors, 3 in. ...

  1. #1
    Junior Member
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    Feb 2009
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    Broken Arrow,OK
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    red
    1998 Trans Am

    Horsepower gain?

    98 T/A from stock manifolds with flowmaster muffler to heddman longtube headers 1 5/8 ptimary 3 in. collectors, 3 in. collector y pipe into magnaflow high flow cat, into slp loudmouth 2 resonator then into a y pipe and out the back with tips... 3 IN. from the headers back with 3 1/2 in. tips.


    HOW MUCH HORSEPOWER CAN I EXPECT TO GAIN?

  2. #2
    Junior Member disc0monkey's Avatar
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    Dec 2008
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    NJ
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    blue
    2000 Trans Am WS6 6M

    stock cam? headers usually wake up the car with a cam designed to work with a high flow exhaust.

  3. #3
    Member Numba1TA's Avatar
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    Feb 2008
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    Missouri, STL
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    30
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    142

    Pewter
    1999 Trans Am WS6 A4

    20-30 HP to the rear wheels and maybe more with a tune

    1999 A4 WS6 Pewter, Hooker Long Tube Headers ,GMMG Catback Exhaust, QTP Off-road catted y-pipe, K&N FIPK Intake, GM 3.73's, Spohn Torque Arm,BMR LCA's Dyno Tune by PBJ.

  4. #4
    Auto Painter RyanJM's Avatar
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    White
    1998 Trans Am

    Quote Originally Posted by Numba1TA View Post
    20-30 HP to the rear wheels and maybe more with a tune
    I have to agree.
    1998 Trans Am 85k miles.
    Bolt ons, MS3 113LSA cam, Circle D Stall, Tune, Modified WS6 style hood, Full Suspension, 6000k HID's, Clear Side Markers w/ Leds, Led 3rd Brake Light and 18" AR Staggered Killer Wheels w/ BFG KDW NT's.- Weekend Toy/DD
    02 Trailblazer -Sold
    09 Ram 1500 CC - Sold
    09 Cobalt SS/TC - Sold
    13 ram 1500 LoneStar CC 4x4 - Magnaflow, K&N,and more to come-DD/Toy

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