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Old 06-18-2008, 08:20 AM   eBay Motors   #5 (permalink)
jskylar
Junior Member
 
Join Date: Jun 2008
Posts: 6
Don't believe the mileage claims

I put a gear venders in a 2000 powerstroke dually that had 4:10's. Lowered the rpms by 3-400 but saw no real mileage gains, but it was a lot nicer on the ears at the lower rpm. The best mpg was around 17 and I had a mild chip, 4" exhaust and K&N filter. Also had to have the driveline done twice since the first guy did a terrible job of shortening and balancing it. Save your money, I would not do it again.
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2005 GMC Sierra 2500hd SLE, 4X4, Allison 5 speed, Extra Cab-short bed. 6.6 Duramax, Stan's Headers 4" Turbo back w/cat opened to 4", PPE Economy, BFG's, MB Alloys.
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