vloney Posted October 5, 2009 Share Posted October 5, 2009 What kind of luck are you having with the latest 6.4 flash? Our dealership car hauler gained 2 mpg with just the flash. Quote Link to comment Share on other sites More sharing options...
Aaron Posted October 6, 2009 Share Posted October 6, 2009 I heard from a pretty reputable source that the new flash has been noted to beat up on fuel mileage, worse instead of better. Quote Link to comment Share on other sites More sharing options...
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