superchips cortex on a 4.8

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06-26-2008, 12:45 PM

Hurley00

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superchips cortex on a 4.8

a buddy of mine got a the cortex for his o6 duramax and we programmed mine with it and it was like nite and day performance wise. im wondering if it be worth it buying that or getting a custom tune. which would be better?

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06-26-2008, 12:48 PM

nonnieselman

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Custom tune FTW!!!
You talkin about the 4.8 in your sig or do you have a Dmax?

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06-26-2008, 12:49 PM

BlackGMC

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Comparing Diesel and gas tuning is like comparing apples and donkeys.....

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