FMF exhaust

[sytrex]

hi,

now i have a stock exhaust on my blaster.
i want to change that to a fmf exhaust.
question: do i need to change my carb settings?

 

[Triple_B]

You will need to rejet your caberatour. You will have to buy a few bigger main jets and do plug chops until you find the right one.

 

[specialized7]

yes you will need to up the main jet 2 or 3 sizes id say
very easy to do actully.
get carb off bike and unscrew the bottom(4 screws) buy a jet tool and unscrew the jet, replace with a bigger jet (probably 260) stock is 220 or 230 depends where your from.

 

[Blasterdude27]

270 main, needle in the middle, stock pilot, airbox lid removed. That should get you close. But due to elevation, temperature, and other things it probably won't be spot on.

 

[piezzi]

270 main, needle in the middle, stock pilot, airbox lid removed. That should get you close. But due to elevation, temperature, and other things it probably won't be spot on.

I have the same as above, but I'm at sea level (400' or so) and I needed a 300 main.

Go to jetsrus.com and buy a range of jets from 260 up to 310 and then take the time to figure out which jet works best for you by doing plug chops.

Good luck!

 

[Budget_Blaster]

I run a 280 with an fmf fatty gold series and sst2 silencer.but I've got vf3s k&n and so on.plg chop says I'm spot on.


Since fmf will suggest a jet size to get you close when you buy it I'd start with their recommendations.