im also having a jetting problem, i even started a thread. i bought a dyno jetkit today and slapped in the 350 main. for mods i have full FMF turbine core2, Vforce2 and k&n air no lid. its pretty cold here in RI. (sea level) im trying to figure out what is the best jet to use. i really cant afford to buy a bunch of plugs and do chop tests so im trying to avoid wasting $ im hearing270,280, 290? i have the 350 and its too rich. i only have the 340 to try next if its still too rich then back to my 230