Thread: bad gas mileage and bad coolent leak?

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  1. #1 Re: bad gas mileage and bad coolent leak? 
    Explicit_Spade
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    Default 03-23-2011
    A custom tune and headers would be a start.
    Quote Originally Posted by W-Body Store
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  2. #2 Re: bad gas mileage and bad coolent leak? 
    Fivefingerdeathpunch
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    Default 03-23-2011
    you dont have enough flow mods yet IMO to be on a 3.4 yet.

    and your running WAY to cold of plugs for your mods. Get some 605 copper cores.

    check the coolant elbows

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