jetting question

[froggieboi]

I took off the airbox lid today and ran it and it was cutting out when you first get on the throttle. I don't really know where to begin. Which jet would I mess with? I am running an FMF Powercore IV, #155 Keihin main, #42 Keihin pilot, stock needle position, and a K&N filter. Any ideas guys.....

Mark have you messed with the fuel mixture screw at all?? Also moving the needle up 1 notch should help compensate for removing the lid,,,is it actually at the bottom or maybe in the 1/4 to 3/4 area,,if so it's probably the needle position,,I know most people running no airbox lid and aftermarket exhaust have changed needle position,,,how was it on the top end,,did ya hammer down and let off the throttle any to see how it acts??

PS..turn on yo cell phone I'll be callin ya after 1:00 today,..:D

[froggieboi]

I will check the fuel mix screw. 2 1/4 turns out right? thanks man. The cell is on bro...call at will

[rdmex]

is the plug black if so kick ur main jet down to like a 152 or 150

[Wheelie]

Drop the clip on the needle one notch before you try anything else. Your jetting and mixture screw settings sound to be spot-on.