About a year ago after breaking in a new piston I measured the PSI at around 140, now (1 year later) the compression jumped up to 190 and the bike still had monstrous amounts of acceleration and power but once I get into the high RPM's it flails, it chokes and sometimes backfires, I don't know what it could be, any suggestions?
BTW: the bike is a 1994 CR250
BTW: the bike is a 1994 CR250