ProShifts17
09-09-2012, 06:39 PM
i have a 400ex with a .20 over piston (406cc) and its high comp at 11:1 and a fmf slipon iv. is a 38 slow jet and a 155main ok to run or is it too lean?...running air box lid on. due to muddy and sandy conditions
View Full Version : 400ex jetting... .20over 11:1