I just rebuilt a totaled 2003 4door 4x4 with a 5speed manual. I have been looking for programmers on here and seen alot of talk about the Diablo and Smarty being very good at HP but what about fuel Mileage??? I know on extreme settings you are not going to get good mileage but what about the lower settings , Thanks

 

My diablo predator on performance 100hp has incresed my mileage a solid 4 miles to the gallon hand calculated

 

The Pred 100 hp is also their economy tune - that's one reason I bought it. It didn't help mpg but is an awesome program and even more awesome for towing. I can get the same mpg on Extreme but it is hard - the throttle is pretty touchy. According to guys that used both, they vote Predator. Craig

 

smarty #9(170hp) + 35" Mud tires = 2.8 mpg hand claculated

 

I hope you mean +2.8 mpg.

 

LOL.....yeah thats what i meant.

I probably get a TOTAL of 2.8 mpg when playing though...LOL

 

yep yep, no doubt the perf tune is the best for mpgs, saw a gain of about 3 mpg