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Old 08-10-2017, 10:30 PM   #8
David Lee
Senior Member
 
Join Date: Oct 2007
Posts: 739
Default Re: low fuel mileage

Quote:
Originally Posted by Hacksaw View Post
I have a Bully Dog. Tried 3 different modes and either one seemed to effect mileage only perf. Recently fried the auto trans and since the rebuild I have not used the tuner. It's got 4" exhaust.
what do you get when not towing. I have the 99 version and get between 17 and 19mpg
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