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View Full Version : what jetting with stock modified muffler



ae13291
02-19-2009, 08:00 PM
hey guys, im running all the mods in my sig for the 400ex, i finally decided to remove my stock endbell and modify it with just a screen mesh and i reinstalled it. right now i am at a 150 and 40 pilot jet. it is running a little lean since i installed the cam, my riding area is 5000 elevation. i was thinking about going to a 155 and stick with my 40 pilot. thanks guys

honda400ex2003
02-19-2009, 08:41 PM
Sounds good on the jet. Try it out. how does it sound with the inner baffle out compared to stock? Steve

ae13291
02-19-2009, 08:47 PM
the whole sound of the quad has changed after the cam, in has more of a poppy kind of sound with the silencer removed, but on full throttle it sounds exactly like a honda 450r motor, im sure it made a big differance in exhaust flow since all of a sudden it made my quad much leaner. but i like how it sounds and i think its good enough before i get my slip on

honda400ex2003
02-19-2009, 08:55 PM
cool, good to hear. you'll like the slip-on too once you get one. Steve

ae13291
02-23-2009, 10:23 PM
thanks buddy