I bought a 2010 sportsman 550 today. The guy said that sometimes it wouldnt rev very high. There is a check engine code up of 22. I used a multimeter to adjust the tps to .71 volts but that didnt help. What its doing is it will idel fine but when i go to give it gas the rpms will max out at 3500 likes its hitting a rev limiter. Any help will be approciated.