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Discussion Starter #1
Anyone on here have H&S tunes and then buy the KEM tunes to go onto the H&S tuner? I am wondering how the fuel mileage changed by changing to KEM tunes vs. running the H&S tunes. I am thinking the mileage will go up with the KEM tunes. Thanks for any feedback.
 

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StackinChipsLikePringles
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3,085 Posts
You'll prolly get better responses posting this in the 6.4 aftermarket performance section
 
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