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Originally Posted by 2010_5thgen
why not spend a few bucks and mod the hummer and get it tuned to help get some better mpg? ive thought about doing this to mine. i put a new intake on. im gonna do new headers and port the heads and then have everything tuned. should pick up a few more mpg's.
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LOL...good luck. Post your results. The only two ways I've seen is: diesel conversion or putting a block under the gas pedal to keep it from going down so far.