04 YFZ 450 cutting out
 

my yfz is cutting out at 3/4 throttle, in all gears, i have a pro-circuit slip on pipe, air filter lid is on, dynojet kit with a 136 main, i've tried changing coil, running on reserve, i'm kind of at a loss, can anyone offer some words of wisdom

thanks

04 YFZ 450 cutting out
 

is ur airbox clean, do u have an aftermarket filter, is ur filter clean????????

04 YFZ 450 cutting out
 

stock air filter and the box is pretty clean, i cleaned it last weekend, and still same problem???

04 YFZ 450 cutting out
 

Your main jet is to small, try a 150 or 155 just as a quess not knowing your elevation and temp but the main jet affects from 3/4 throttle and up.

04 YFZ 450 cutting out
 

Thats what i was thinking. Your main sounds way small.

04 YFZ 450 cutting out
 

check if ur jets are clean

04 YFZ 450 cutting out
 

u might also wanna get a aftermarket air filter it will give u more power since u already have the pipe and jets ur better off with a air filter like k and n

04 YFZ 450 cutting out
 

lose the box lid put a165 main jet in ,you may have to turn your idle down a hair ,but it should run great. since you have a slipon you should not have to worry about moving the clip on the needle. If you have any questions feel free to ask.

04 YFZ 450 cutting out
 

thanks man