what is the end of that pipe,,,it keep pulling and pulling as i lean it out and still running too cold at 1180,plug still look good,sensor at 3"
of the exhaust flange.i've droped to 168 mj,i'm not sure about going down to 165 with race port,,but it should happen,7400-7550 rpm peak.
wouls like to hear about your jetting story on that one,very efficient
package wich shown how HPD stuff work so great and smooooth,thanks,buy american.

 

i was running a 160 main and a 38 pilot then in my setup thou i dont have the same as you at my house it is 1665 ft and i ride around 2500 ft up to 5500 ft . right now i am running the stock one due to a flooding problem not sure if it is needle


i took the 39 pwk apart today it was 163 main not a 160 and now has a 35 pilot jet

 

maybe i got too much weights in the top,so i can't reach the optimal
spot :1200-1250 degrees,it seem mine has 1200 only when turning
7600-to 7800 rpm,i'll see that more later...