just bought the dyno jet kit for my raptor, according to the instructions, i should use their 146and148 mainjets with aftermarket pipe and open airbox, the jets that came out of the stock carbs were 140 and 145 and they look bigger than the dyno 146 and 148, am i seeing things right or whats the deal, thank you

 

Dyno jet is different size then Yamaha jet. Also the needles is different too....

I am running 185/190 on my bike that I have LRD pipe. Along with a minor mod that I have on the bike.