A lot of members, including myself, have had great results with the tune from Mike at
5-Star tuning. There's an on-going thread
here that details several member's experiences with Mike.
I could not be more pleased with the tune. Mike worked with me on the tune and has e-mailed me several updates that fine-tuned it. As far as performance, I was able to go up the I-40 grade at Black Mountain with toad at 50MPH, before tune was only able to do 35 in first gear! On slight upgrades, like where interstate highways go over railroad tracks, there no is downshifting. Mileage is as good or better than before, especially when I use a light foot!