Modded Raptors Forum banner
popping
1-1 of 1 Results
  1. Raptor 660 General
    04 660 , 10.75 piston, stage 1 can no airbox and k&n filter, .5 inch carb space. I'm having trouble getting this dialed in. I'm suspecting head issues but don't know. I'm at 5509 ft in Colorado. I have a problem with upper mid to top end power. It falls off and starts to POP. If I'm in neutral...
1-1 of 1 Results
Top