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  1. 07-19-2007, 03:38 AM #1
    Street Fighter
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    pewter
    99 Trans Am

    Question What is the true rear wheel Hp gain with long tube headers.

    Can someone tell me what is the true rear wheel Hp gain with long tubes with just say a Hooker muffler and stock tail pipes? And will I lose power on the bottom end?
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  2. 07-19-2007, 05:38 AM #2
    nhraformula
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    black
    2000 nhra edition formula

    i gain about 30 rwhp
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25
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  3. 07-19-2007, 07:22 AM #3
    slade8200
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    02 SS #8850

    That is unbelievable...can't wait till I get my headers on.
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  4. 07-19-2007, 07:51 AM #4
    SSwt00SS
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    '18 CTS-V
    '13 ZL1

    i gained 26rwhp and 22rwtq respectively with my LT's/ORY...
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  5. 07-19-2007, 12:10 PM #5
    Street Fighter
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    Question

    What about bottom end Power lost?
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  6. 07-19-2007, 12:29 PM #6
    GottaHaveLS1
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    Quote Originally Posted by Street Fighter View Post
    What about bottom end Power lost?
    You can get numbers like those with a tune, but it should be around or over 20 rwhp w/o a tune.
    You won't lose bottom end power but high end will spike after 3000 rpms. It will feel like you lost low end compared to the higher rpms, but hp and tq will be higher all throughout the powerband.
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