Hi there. I have a 2011 Kx450 with the following mods; ported head, hotcams stage 1 exh & intake cams, wiseco high comp piston, precision concepts efi remap & fmf megabomb/ 4.1 rct exhaust & 25/75 vp110/premium pump. My cousin has a 2011 Kx450 w/ MRD full exhaust (which I sold him) and a remap from Kawasaki in mammoth @ the track on premium pump. Gearing on his bike is 13/50 gearing on mine is 13/47. His bike pulls way harder than mine. I feel even with the slightly higher gearing my bike should outpull his given the mods. I have yet to switch out ecu's from both bikes. Any insight on my bikes lack of power compared to a pretty much stock bike of the same year?