| I forgot to add this.....I called a guy form one of the companies selling these and he said they did a test on an '06 DMax. They got around 45mpg at 65mph and 38mpg at 72-75mph. I forgot to ask if this was a lab setup or a real world driving on the highway setup.
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2007.5 Chevrolet LT 2500HD Crew Cab 4X4 Duramax Allison, MBRP Turbo back, Quadzilla Stealth 2
Last edited by kuntry_kid : 06-25-2008 at 08:43 PM.
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