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  1. #1 Re: ...topswap 
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    Oops i meant 3.2 TUNE not pulley
    Quote Originally Posted by l67ss View Post
    Yep that y i sed 3.4 TUNE not pulley
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  2. #2 Re: ...topswap 
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    The tune doesn't change based on the pulley size.

    It changes based on the MAF you're running, the cam, injectors and fuel.

    There is nothing else to change.

    If you're running less than 14* of timing, change the pulley, not the timing.

    What I would suggest at this point is a compression and leak down test.

    Just to see how your engine is doing so far and if there are any potential issues that you may or may not see when you get the heads off.
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  3. #3 Re: ...topswap 
    GXP Level Member Grimsin's Avatar
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    Quote Originally Posted by matt5112 View Post
    What I would suggest at this point is a compression and leak down test.

    Just to see how your engine is doing so far and if there are any potential issues that you may or may not see when you get the heads off.
    ya that wouldnt hurt

    3.8l N/A POWA! :4'' HAI\L67 HVTB\HV3\ER Rockers\WP underdrive pulley\Headers\cat delete\91 octane overkill incar tune.3.69 gears, Trans go shift kit.
    My Car:http://www.grandprixforums.net/threa...2005-Impala-LS
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  4. #4 Re: ...topswap 
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    At this point that would be to help decide between rebuild and mod at the same time, or to go ahead and mod now and rebuild or swap later right?
    I don't know what the hell I'm doin.
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