My 08 came out with 20" wheels..first few tanks 9.5mpg...took of 20" wheels and put my 17x10's that I kept off of my 06 when I traded...mpg's went to 11.5....purchased a superchips cortex mpg's went to 14..now I have 17k miles on truck mpg's are staying 14.5-15...what can I do now to see a increase? Would the Spartan Tuner do better? Advice please....THANKS
Originally Posted by valetcruiser
i just put the spartan on mine. nothin else except the tuner and cat/dpf delete. i run the 210 tune. everyone says they get better milage out of the 250. i get between 19.5 at 80 mph and 23 at 70mph highway. i haven't had it long enough to know what it is around town but from what everyone else is saying you're lookin at around 15 to 17.
has anyone noticed a drop in mileage after removing or gutting cat, i gutted mine and went from 37" to 35" tires and seems like i lost MPG's, i was hoping to gain
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