Thread: 08 upgrading

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  1. #1 08 upgrading 
    Deanpope2
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    Default 01-21-2015
    So i know you cant tune an 08 grand prix but i was wondering, what all can i do with out a tune?
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  2. #2 Re: 08 upgrading 
    Sven the Sexman
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    Default 01-21-2015
    Headers, rockers, exhaust...some people will argue there is more. You could always go to 07 PCM & BCM to get around it.
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  3. #3 Re: 08 upgrading 
    Deanpope2
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    Default 01-21-2015
    I had a post an they said i couldnt change it out an they said no dp cause it gets to much flow
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  4. #4 Re: 08 upgrading 
    Fivefingerdeathpunch
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    Turbo is the way to go. Fivefingerdeathpunch's Avatar
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    Default 01-21-2015
    If you re-read what I said, you can make a downpipe work.

    Weld the factory cat converter back into the downpipe.

    SMGPFC Member #1
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