do i need a jet kit

[black blaster]

i just order a fmf fatty exhaust with a power core 2 silencer for my blaster and i was wandering if you need a jet kit or will it be alright without one?

[sniperd]

It will definately need to be rejetted

[bones85]

You'll need to reject, but that doesn't necessarily mean you need a jet kit. you can go to your local Yamaha dealer and get the jets you need, and ask one of the techs about what kind of main jet to run if you're unsure yourself...

[black blaster]

what main jet do you think it will use? thanx for the advice

[bones85]

Depends on the weather you ride in, temperature, altitude, things like that...I'd say at least a 270.

[black blaster]

the wehater is usally kinda hot around 80 and most of time i ride when its dry

[bones85]

Yeah go with at least a 260, maybe tweak your needle, about the 3rd notch from the blunt end.

[black blaster]

thanx dude appreciate it