As some of you know, I just got a 2002 400 exc. I'm new to jetting and I'm trying to get the bike dialed in. I live in Southern California, been riding for about a year now, and I don't race. I'm trying to get to a good starting point and refine my jetting from there. Right now I've got the OBDTM needle. The rest of the bike is as it came from the dealer. Looking at what some others are running, it looks like I should try an OCEMN & OCFHM needle, and anything from a 168 to a 172 main. Any other thoughts? I'd appreciate any suggestions you may have.
