Tims660rap
07-02-2009, 09:36 PM
i got a an 05 450r full curtis sparks exhaust , 13:5:1 race piston stage 2 cam k&n w outerwears runnign no lid. i had it jetted at a shop ran amazing...got cheap started runnign 93 oct gas in it use to shutdown pinned..i messed with fuel air screw and now im back to running 110 octane (what biek was professionally jetted for) and notsure where to put f/a screw....bikes jetted correctly with a 188 main,52 pilot,4th clip position on hrc needle.unsure turns out on fuel airscrew...breaks up on 2 1/2 and 1 1/2 am i totally off?? any suggestions??maybe its not fuel air screw?? breaks up liek 1-3rd gear at half throttle, thanks!