To solve this problem create by Honda worries with exhaust laws, you will have to block the 'pair valve'. Very ease mod that will change your bike for good. All info is here: www.bikersoracle.com/vfr/forum/showthread.php/t=44837&page3&pp=15 look for postings from 'fonda honda" Do it, and you will be amazed. After this mod my bike runs like a carb model, no problems at low speed at all. The next steep to solve the on and off throttle response is the ITS mod, also in the above site.