Husqvarna SM 510 R Isn’t Running Properly
Quick tech question guys. My 2010 smr 510 with 7500kms isn’t running properly and it has a bunch of aftermarket done to it when I bought used it and I don’t know what to try do fix it.
When it’s idling if I hit the throttle quick (even just a little bit) it pops or backfires and shuts off. I have to get on the throttle slow. And while riding it feels like it has many flat spots in the rpm range almost like it’s starving for fuel
The bike has a jd jetting programmer and the factorypower up kit installed along with race baffles.
Please help me with ideas of what to try to diagnose and fix this