Tuner for MGP

wwm

wwm

TO MANY TRUCKS
My aunt has a duramax prolly 05-07 i dont know for sure i will ask tomorrow. She is interested in purchasing a tuner for her truck that will just increase fuel mileage. She doesn't need a ppe or anything high in performance, just mileage. What would be a good tuner just for that.

P.s. Anybody got a used tuner they would like to get rid of.
 
A diablosport Predator would be ideal for her then. Good price and has been tested against the PPE std. and superchips for mileage.
 
does the predator pour alot of smoke though, i know it does in my dodge lol
 
and it really wont smoke at all unless you just floor it but thats on the 120 tune ive never even put mine on any other than 120
 
and it really wont smoke at all unless you just stomp it but thats on the 120 tune ive never even put mine on any other than 120
 
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