i jetted my raptor but it takes off good then it starts backfiring and then it happens when im in every gear i was wondering what should i do change the jets and put my stock or put bigger ones(trinity exhaust). i have the 160(left) 165(right) should i put the 165(left) and the 172.5(right)



03'raptor(blue)
trinity exhaust
proflow
alba procomp a-arms
stainless steel brakeslines
trinity racing graphics
itp holeshot tires rear
works shocks

 

Are you running with or without an airbox lid? What's your elevation? Does it backfire on acceleration or deceleration?

 

im running with a lid and it backfires when i accelerate and i dont know my elevation i live south texas close to mexico