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Hey guys, I recently bought a 2001 DRZ400s with 5000 miles and I'm having some trouble jetting it properly even after buying and installing the JD jet kit. Important bits: The bike has a stock exhaust and I did the 3x3 airbox mod. Previously it had the 22.5 pilot, 162 main, and the fuel screw had been adjusted (brass removed but stock screw). With this setup it was a quick little bike, but it popped A LOT on deceleration and it missed a little on idle. Now I've installed the JD kit with 22.5 pilot, 150 main, extended screw at 2.5 turns out, and blue needle at 3rd position. Currently with this setup it feels noticeably slower but it seems to run better, if that makes sense at all. It idles well so I assume the pilot and fuel screw are adjusted properly and it doesn't pop at all now on decel, but it feels really down on power especially in the top end. When I go WOT and then back off a little it seems to accelerate a little more which leads me to believe the main jet is too SMALL, but I'm already at a 150 with stock exhaust...that said, it had a 162 and seemed more powerful. Huh. My next step is to pull the spark plug and see what it tells me, but I'm hoping someone has some input for me. Am I the only one the JD kit hasn't worked out for? Thanks, J
I know this topic has been discussed in the past, but I have not found any options available for the new 2018 bikes. I live and work for a new Beta Dealer (Auburn Extreme Powersports) in California, and we are having a difficult time mapping the RR-S bikes for full FMF exhausts. We have tried contacting Beta Support several times for this issue to no avail, and we typically are given the runaround when transferring to techs and secretaries. From what we can gather, the FMF flash is designed for the RR bikes, but not the street-legal counterparts. Every time we try to install the FMF map onto an RR-S errors occur, and the programmer screen goes virtually blank. We have heard through the grapevine that some are using the RR maps on the RR-S with success, but we have yet to try it, even on our own bikes for fear that it will permanently erase or damage the CDI. Any and all help or suggestions regarding this topic would surely be appreciated! Thanks, Ben.