Well i just finished putting the PWK on my 125 and all i have to say is.......WOW. All i did was look at what jets were in it to make sure they were what they had wrote down on the jetting sheet (172 main 45 pilot) and checked the airscrew(1 1/2 turns out) then bolted it on,havent fine tuned anything yet but just had to ride it in the field by my house and i have to say its damn close right out of the box and a BIG difference compaired to the Mikuni.I'm sold and will recommend this mod to anyone thats still running a stock carb on there 125.Still not completely tested i'll have to take it to the track but from just riding it i can say that i'm very impressed for sure,and to think i thought it ran great before........
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