What type of mileage increase can the SCT deliver? I am currently getting 15.5avg/18 hwy with a light foot. I have an 03 cc dually 4x4 6.0l w/4.10's and the warranty is up, so i can start to make mods. I want to increase MPG as this is my daily driver, two of the replies I have had recommend the SCT with custom tunes. the only engine performance mods I am thinking about are a tuner/programmer and exhaust. At 8000#'s it is as fast as it needs to be, but at 3.50/gal I need to find some economy enhancers
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Also what do the SCT's codt?
Thanks for the info.