I have been a wheelie problem with my new 990. The Bike Just would not pull a 2nd gear wheelie! i have 16t cs but every time i tried it it felt like the bike was shutting down on me. Well after a lot of searching i found this mod!! http://www.superduke.net/forum/viewtopic.php?t=72 It takes 20 min and what a difference!! That 20% extra power in 2nd and 3dr is huge! i am sure this is old news but i was so excited i had to tell somebody!