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  1. 07-09-2007, 03:30 AM #1
    Street Fighter
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    pewter
    99 Trans Am

    Question How many last bottom end after header install.

    I have just heard that alot is last on the bottom end when installing long tube headers on the LS1 motors. Is this true? and if so, just how much lost is it? and how long can I run the car without getting it tuned?
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  2. 07-09-2007, 02:13 PM #2
    patricksd
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    Navy Blue Metallic
    2001 Camaro Z28 M6 T-Top

    I just had Pacesetter LT's installed, and didn't notice any loss on the bottom. But then again, the car never felt like it had tons of torque below 2500 rpm's.

    The big difference is in the mid to high rpm range - VERY noticeable.
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  3. 07-09-2007, 04:05 PM #3
    9t8z28
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    SILVER
    2004 CTS-V

    You will not loose much down below and you will gain alot from the middle to the top!
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  4. 07-09-2007, 04:08 PM #4
    Mr. Luos
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    Red Tint Jewelcoat
    2008 Trailblazer SS

    As long as you get properly sized primaries (1 3/4" for most apps) you won't loose low end.
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  5. 07-09-2007, 04:57 PM #5
    anniversary30
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    White/Blue
    99 Trans Am

    If it is tuned correctly wouldn't it be bennificial all the way around ? I know my touque and HP went up.
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  6. 07-09-2007, 11:34 PM #6
    BlackLT1Z28
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    94 Camaro Z28

    Usually, with longtubes, you will lose some low-end torque, but gain some top-end power.
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