AMA Supersport Racer
Join Date: Dec 2011
Location: Lexington, Kentucky
Thanked 102 Times in 84 Posts
Feedback Score: 2 reviews
Have you swapped out for aftermarket exhaust (full or slip on) or air filter? With no fuel management system, it might be causing you some issues.
But being it starts happening under 6k RPM, it might be an injector issue, because above 6k I believe the secondary injectors are active. Does it feel really sluggish under 6k when you ask it to accelerate?
'03 600 RR - ~33,000 miles (14,000 from me)
Yoshimura RS-5 Slip on - Arrow Stainless Headers - BMC Street Filter - PCV - EK 520 Chain on Driven Sprockets - CoreMoto Stainless Lines (F+R) - Dan Kyle PAIR Delete - The2Wheels Shorty Levers - Vortex V3 Rearsets - Woodcraft Frame Sliders & Bar Ends - Woodcraft Stator and Clutch Covers - Cox Radiator Guard - Renthal Dual Compound Grips - 1000RR Kill Switch and Throttle Housing - TST IT and FE - Proton Flushmounts