Posted May 23, 2005 - 06:14 AM
Here's my current setup on my '05 WR 450. 160 main, 50 pilot, .020" shim washer under the needle clip. (or you can buy the YZ or '04 WR needles that are adjustable) I also removed the AIS with the Lowedog plugs. The bike starts right up now and no popping, backfiring or hiccuping. We start at 5280' here and so far I've only been up to about 7500' where the snow starts. I've no doubt that the JD kit is good albeit pricey stuff, and so many TT riders use it with positive results...but I'm only $10 into my jetting setup right now and won't change unless it is really bad at 10-12000'