1siktkt 0 Posted September 28, 2015 Does anyone have advice on what to start off with for jets on a '13 XR 650L with UNI filter, FMF Powercore pipe, de smogged, de snorkeled, and Dave's Mods done to stock carb? Thanks Share this post Link to post Share on other sites
Danmule 2 Posted September 29, 2015 I have an 08' with fmf q4. I havent drilled out the slide, but all other mods the same. I run a 158 / 55 . Seems to do pretty well. Share this post Link to post Share on other sites
PastaPilot 17 Posted September 29, 2015 I went one richer than stock jets and it worked. You may want to try 2 steps richer than stock on the main jet. Did you shave the air screw? You should be able to adjust for the idle with the air screw and one step richer. JB Share this post Link to post Share on other sites
bikeslut 1 Posted September 29, 2015 Dave's Mods should include jetting advice...it worked for me Share this post Link to post Share on other sites