Average Reviews:
(More customer reviews)This was installed on my 2009 2500HD 6.0L gas truck. Worked great to fine tune my speedo as I have larger that OEM tires on the truck. Gas mileage increased slightly 1 mile per gal. at best. There is no "throw you back in your seat" kindda power but I did notice that it can hold highway speeds better when towing a load. What I mean by that is there is less down shifting when going up hill so more torque is what I can notice. I would buy again if I had to do over. I did have to download a update via computer before I could program my truck so a little computer experience is needed, but not hard to do.
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