Exhaust and jetting 2003 WR 450
Posted October 09, 2009 - 02:37 PM
Posted October 10, 2009 - 02:45 AM
Second, I'd say a 170 main would be to much, yes, but a 155 sounds pretty small. I would try a 160, then a 165 and see which is best. You also have to consider your needle and what clip the needle is in. It all works together....
As a example, I have a 04, with hot cams, all free mods, and FMF, in eastern Canada at sea level, and I am running a 170 main, so I would have to think a 170 is to rich for your location, and bike
But your best bet is to go to that thread which is the WR jetting database as step #1
Posted October 11, 2009 - 06:18 AM