SOme of you might have read my posts in the tech discussions, but I having problems with my '07 DX revving above 6,000 rpm w my rinehart 2:1 and K&N and topless. I am on my second power commander and still having the same problems. Unplug the commander and the thing runs great. I just want to see what part number is on everyone elses commander on an 07 both of mine begin with 809 and PC said there is no difference. I just wanna ride man!!!