yosh jetting

[shallow518]

my buddy purchased a 05 450r with a full system tri oval yosh pipe. it seems to be stumbling when you stab the throttle. the pipe instructions said that you dont need to change jetting, but that seemed a little odd to me. i was also wondering if the valves need to be adjusted. any jetting suggestions or suggestions in general would be great

[stuftmunky2k]

i have a full yoshi pipe, i had to remove the air box lid and put a stage 2 jet kit in it. idles rough but runs like a loose goose.

[shallow518]

whats a stage 2 jet kit. like what sizes? move the needle at all? air fule screw?

[shallow518]

anyone else?

[Project300EX]

Just get Keihin jets from a shop. They're about $5 a piece. If you cut the back of the lid off you should be good to go with a 170 or 175. With the stock lid you'd probably need to go around 155-160.

[warr72]

I had a yoshi on my 08 and did not like it at all. It moved all the power to the top end which did not suit my needs.