Who would have thought that you could get good mileage with the programmer set on Crazy Larry. For the last year I hardly ever used the Crazy Larry mode. Then a friend at work, was telling me how he had written a 300 hp program for his D-max using EFI-live. He said he was getting 20 mpg +. That got me thinking, so after work I set the truck on Crazy Larry and just started driving like my Grandmother. I'm amazed, by keeping the rpm's low and cruising whenever possible. My truck has been getting 21 mpg according to the overhead display. Of course I have a 6 speed so I have the ability to drive with the engine at 1200 rpms unlike the guys who have auto's. I have never slipped the clutch with my Bullydog programer, even when I'm at full throttle, So I really don't see any down side to driving like this other than when i accidentally grab too high of a gear and drown the guy behind me with black smoke. Oh, well. The fool shouldn't be tailgating me.