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Forum: Trucks, Trailers and Transportation

12-02-2005, 05:39 AM

Replies: 17

Duramax, what's the best gas mileage chip or programmer???

Views: 50,877

Posted By NJSONIC

Re: Duramax, what's the best gas mileage chip or programmer???

2002 K3500 crew cab with the allison trans.-the best I've gotten has been 19 mpg on the highway light load and driving 65 mph. The truck is stock. It looks like you can get in the 20 mpg range if...

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