As BP6666VR said, check for vacuum leaks. Especially around the throttle body boot, they're bad about cracking and leaking. While the bike is running spray some carburetor cleaner at and around the boot. If the idle speed increases, you need to replace that boot. There's also 2 elbow ports on the right side of the throttle body (I think it's the right side) they should have rubber caps on them. Make sure the caps are good and in place.
I had a problem awhile back with my bike, it would cut off if I didn't have the rpm's up. I replaced the throttle body boot and the vacuum caps which helped, but didn't fix it. I found a broken wire at what I believe is the map sensor. Fixed the wire and haven't had a problem since. Just a few things to look at.
Also, if everything else checks out ok, you can turn the idle screw out some on the throttle body where the throttle cables connect, that will up your idle speed. If your plug wires haven't been changed, it's about time to do that.
Wrapped RPW Slash pipes
K&N air filter
Last edited by Ghost_Rider; 02-01-2016 at 08:09 PM.