Thread: Horrible gas mileage for my 06 GXP

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  1. #41 Re: Horrible gas mileage for my 06 GXP 
    GXP Level Member 91parkave's Avatar
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    If its stupid cold your car will be in open loop longer till it gets to operating temp. As a result mileage will suffer. The diablo tuner is great for begginers but there's a lot more to unlock to help with mileage however the in tune won't let u **** with those tables so much. You'll have to get a lewtune to get it right.
    06 GXP | 222/227 cam/cartuning turbo kit on 8psi/meth/e85 coilovers/ still on stock trans at 130k
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  2. #42 Re: Horrible gas mileage for my 06 GXP 
    GT Level Member ricio1991's Avatar
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    I average 17mpg on my 2004 gtp comp g. Its normal!


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