Pop that airbox lid and airfilter off and take a look down the Throttle bodies at WOT [ Wide Open Throttle ] . If the butterfly's are going past center and starting to close again, you may be loosing top-end power! You don't have to live with this condition! pull the air box base and take a look at the throttle linkage. You will notice a guide-roller set-up. Just put a RING SIZER on the top of the guide. Adjust to taste and enjoy a extra HP or two!