Best mileage chip/programmer?? 07 5.9L
 

Ok I'm sure there is a lot of different opinions on this....:humm:
My buddy has an 07 Dodge cummins 5.9L and is wanting better mileage! Not something with crazy horsepower cause he doesn't want to screw the trans!!! Or if its better maybe a "big" chip/programmer just set on a lower setting?

WHICH ONE SHOULD HE BUY??

:tu:Thanks in advance guys!!!!:tu:

Well I guess there is very few opinions on this!!! No replies yet!!!

Anyone????

hmm ya i was wonderin what the best milage people have seen out of a 6speed 4:10 geared dually? so far i have figured rufly 15mpg and i have 35" tires and its stock with air aid intake and thats about it

If you're wanting Mileage and mileage only.....Grab a diablosport predator they will give you the most MPG.....However Smarty will give mileage too, and it will run cooler than any other tuner on the market for us....

im getting a smarty for my 07 i wonder if Il be any smarter

lol....I am gonna agree with you...that was a SMART buy....those things are pretty sick and dude the versatility on those things is just unreal...