Does anybody know the redline rpm on a 2007 sportsman 500EFI. I have a EFI programmer on it and with the new heavier tires i put on it was bogging down with to much fuel on the top end. It would only get up to 40-45 mph and run about 5800rpm. Turned back the high end fuel alittle and it got it going pretty good again. I just dont want to over adjust and run the engine too high.