2015 pro 800 Terrain Dominator a few issues.

Picked up a used 15 pro a couple months ago and have been riding it. Has a head and a HPS can on it. Not sure what head. It has a low end bog and will sometimes hit DET sensor and die. Haven't tried any race fuel in it or adjusted the TPS. It has no fuel controller on it. Any suggestions on where to start would be appreciated.

Issues.....

One of the problems is the guy I bought it from had no idea what head is on the sled. He had no idea on clutching either. I have not checked the exhaust valves or the fuel filter. The clutches looked good. It has 62 gram EpI belly buster weights and a 58-38-36 er helix. Appears to be a team green spring in the drive. I did not pull the driven apart to see what was inside. I will try to figure out what codes it is throwing. I want to do the skidoo thermostat on it so i may just pull the top cap off the heads to see what i have. Will probably do a different clutch set up for next winter. I ride 7000 to 10000 ft elevation.