2007 700 king quad all i have on it is a HMF exhaust and a aftermarket airfilter. It will only go around 43 it has no topend. What do i need to do to fix it it is fuelinjected. Thaxs for the help

 

HI you may have got mod in the gas tank. It do not take much . Your injector is half pluged . I have a 2006 700 kingquad with 5300k that is the only prodlem I have had. I cyphin the gas out 3 time and filter it . Cleaned the injector and put a in line fuel filter.