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Superchip

510 views 2 replies 3 participants last post by  BigOlDog 
#1 ·
Is it common to lose fuel milage with these? went from 17 down to 13-14mpg, I called them and really got NO WHERE with them Thx
 
#3 ·
Not all tuners will increase MPG. We cannot guarantee EFI will but can tell you on average what we see. Results vary as driving habits, grades, loads everything plays a role in it.

I don't know when the last time you changed a fuel filter but start there it may help. Try a different HP setting as well. The one you're using may not work with your style of driving. If not give EFI a try. We will be more than happy to help you get it.
 
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