05 660r Raptor Crackin And Popin

[WHISTLE69]

I JUST GOT AN 05 660R RAPTOR AND WHEN IT'S SITTING THERE AND YOU GIVE IT GAS IT CRACKS AND POPS WHEN REVED AT HIGH RPMS BACK AND FORTH.......ANY IDEA WHAT IT COULD BE?? LOCAL DEALER SAID IT CAOULD BE THE REV SWITCH THAT RUNS FROM THE CLUTCH HANDLE TO THE TRANNY.....SO I CUT THE WIRES AND SPLICED THEM TOGETHER TO SEE IF THAT MADE A DIFFERENCE.....AND IT DIDNT.....ANY IDEA WOULD BE GREATLY APPRICIATED.....THANKS

[the Z Man]

Bad gas, dirty air filter, air leak, jetting wrong, water in the carb bowls.
Should be a good start, evaluate and eliminate, easiest first.