Stumbles and backfires at low rpm

[Cliff]

I, through Dynojet, know exactly what portions of the OEM 02-sensored M/M systems are closed/open, and how quickly they re-act and function/adapt.

I'm sure I'm not the only one who would like to know the details. Is that information available on your site?

[Flatland Dan]

Hooray, hooray. I am back on the road again. The mechanic changed out the air temp sensor, balanced the throttle bodies, checked the TPS settings again, and loosened the valve clearances to world specs. The result is a smoother running engine, better acceleration, and a happy rider. 350 miles between a Saturday ride and a Sunday ride. Went to wash it and give it a good coat of wax and found the rear wheel was coated with oil. The final drive seal is not sealing anymore. Oh well, already diagnosed and a seal ordered. Take it apart tonight and wait for the UPS man. Thanks again to all for the suggestions. Later, Dan