DuMar said:
I did a TBS last year using a home made manometer and initially saw an improvement, but have noticed lately more stumble and hunting rpm. Over winter I bought a Harmonizer and just hooked it up for the first time today. The device showed a +10 to +12 mbar imbalance, and the rpm jumping all over the place. I adjusted the left TB and could here the bike smooth out as balance was achieved. While I was at it, I changed the CO settings on both cylinders (for the first time) from 0 to 5. Initial run around the block shows a big improvement on the bottom end, and what seems like smoother overall running. More testing required to be sure.
So ... here I am quoting myself after a few days riding and testing the adjustments I made above.
First of all, I feel the CO adjustment (I know this comment doesn't belong here) has made a subtle improvement in the overall smoothness of the bike. ::008::
However, I'm still not happy with the TBS. ::007:: I know others have commented on this and found ECU re-flash (expensive) and PCV (also expensive) virtually eliminate problems at the bottom end.
I can't help but wonder though, if there isn't something else that can be done to smooth out this machine at idle. Just tonight, navigating through a hilly residential construction detour that requires lots of stop and go, the bike gets into one of these rpm-hunting spells in first gear on a steep down-hill with the throttle completely closed! WTF! ::010::
My question is: Is the 270 degree setting on the right TB in the optimum position, or has anyone found a better setting? Or am I barking up the wrong tree? I don't have a lot (read zero) experience with fuel injected bikes.
Any input about what might be going on here, or additional cures, is very greatly appreciated.
Thanks,
Mike