Doesn´t get power until 3000rmp, seems to have spark at both plug wires( shocked my self checking,sounds like its runing on one cylinder & doesn´t want to idel(had to turn thee IDE one full turn just to ride).allso makes a loud popping noise when u rev it or while ridein while downshifting. Oyea I put brand new plugs & yes the air filter is some what dirty have not replaced yet but ran it with out one a giting the same results .ps I love this bike it´s a bad-MF. Please someone HELP!