Join Date: Feb 2012
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GEARHEAD TUNES MPG
I just got Matts tunes a few weeks ago. I really like the tunes...but I noticed a significant drop in my mileage. I was getting around 14-15, now I get around 10-11. I do not get on it at all, ever. Just easy cruising. 99% interstate, 1% other.
I thought I would buff out, but 2500 miles later, and I still have a 20-30% drop in mileage.
I switched back to HS canned tunes to see if my mileage goes back up...maybe its the truck.
Has anyone else had an experience like this??
I have a F350 CC long bed. Heavy...transfer tank and tools for the oilfield