jet sizing

[SLSD400exGUY]

okay im going to get a hfm slip on and i all ready have a k&n air filter with outerwears and a outerwears air box lip cover. what jet size would i have to go with?? this is for a 05 400ex.

also what size would i have to go with if i got the whole system for the future.

[cals400ex]

where i am located, i will start with a keihin 155-155 with a pipe (slip on or full), filter, and modded air box lid. the elevation and temperature you ride in is pretty important in deciding though.

[04'400ex'er]

at 1000ft. with the setup below and no airbox lid im running a 160 main 45 pilot 2.5 turns on air fuel screw but im gonna try and go a little richer on the main jet when the get in.

[nosliw]

sweet avatar :D