I think that is the problem I was having. I had to go to the dealer. They "fixed" my trac, after I had reflashed it I went back to stock & bought differnt tunes from Unleashed tuning, & it ran very poorly with the stock tune. I think they changed the factory tune & didn't tell me. It's ok, I didn't tell them I was using the Xcal2 either. Now, that I have the new tunes for Mr. Torrie I won't be going back to stock. This thing runs like a scalded cat now. Never ran better, even the day I bought it. If anyone out there still have the Wayne Foy tunes, I say get these, it's lightyears ahead. I couldn't use Bamachips, because I wanted e85 tune & he doesn't have them, so I don't know if their like Unleashed's or not. If Bamachips is as good as Unleashed, then you'll be much happier with either of their tunes than you are now. I know for sure that'll be the case with Unleashed. It's incrediable.