Ok... if you've been following my rants about setting up the FCRs, here's the next chapter. I got the EMR needles in the mail a couple days ago. I pulled the stock EMT needles and held them next to one another... you'd probably need a microscope and an engineering degree to tell the difference.. but I used a magnifying glass, and sure enough, they're both stamped appropriately... EMT and EMR. Anyway, I swapped them out. I had the EMT needles on the 6th rung from the bottom (richer setting - lifting the needles out). I put the clips on the EMR needles on the 4th spot as a starting point... and though they look identical to the EMTs, the bike runs noticeably different. Better. I almost wonder if I should have gotten EMQ needles. But, still having the same very small problem in the same range (1/2 to 3/4th throttle). Feels ok at 1/8th to 1/4th throttle. When I'm wide open and the RPMs exceed 6k, the bike takes off and almost feels like it's floating it's charging so hard. I moved the clip to the 5th spot as an experiment. About the same... Looking at the plugs, the color is better than with the EMT needles, but still could be interpreted as lean(ish). Very light brown on the electrode... leading to almost a white tip. And the top of the threads are pretty white. I'm wondering if I should go to the 6th spot, or just move to a larger main jet. Looking at the FCR table that shows where the effects are greatest, it's not the main jet area that needs to be better. It's where the needles are... And everything I've read says it's more about throttle position than about RPM (hence why I'm describing this in terms of throttle position instead of strictly RPM). The spot that needs to be cleaned up is with the throttle at 1/2 to 3/4ths. Again, needle territory. But it was evident that with the EMTs, I was running out of adjustability. I don't want the same problem with the EMR needles. Should I buy EMQ? Should I try a larger main jet? Not sure where to go from here.
Tossing in a photo at great risk. I'm sure everyone will start fighting over the color of the plug. Sorry if that happens.
Tossing in a photo at great risk. I'm sure everyone will start fighting over the color of the plug. Sorry if that happens.