I got a white brothers pipe and a k&n air filter and the guy at the yamaha shop told me to put a 147.5 in one jet and put the 145 in the other. I did that and it doesnt run right when i gas it all the way it just acts like its missing or doesn't go, like its outta gas or something but its not. Do you have to change anything else in the carbs like the needles?

 

is there a certain jet size or anything you would recommend maybe bigger jets or anything

 

Did you trim the flaps out of the air box snorkle or any other mods? 150L 155R should be better.

 

i took the air box lid off completely

 

Oooh, you need to be at least where I mentioned or even 160/165 and about 3 turns out on the idle mixture screws. 25 pilot jets wouldn't hurt either but are not a must.

 

thanks, where is the mixture screw at i cant find it. also do i not have to mess with the needles in it

 

I would leave the needles for now. The mix screws are in front of the bowl on the engine side right in the middle, they sit up in a hole.