JH600 stalling

[euphonius]

Suggest to collect the following info:
Bike type, year of purchase, frame- and engine number, ECU box number, type of fuel (90-93-97-98), etc.
If you can also scan scan and provide the inspection sheets from your last government inspection?
We will then compare them to emmission test from a BMW 650 and one from a BMW 1150.
This would give us more evidence that it is mixture related.

Dear Eric, LJH, Motokai, Milton et al,

Many thanks again for these tremendous efforts.

I'm outside China for a few more days so don't have all the data you've requested at my fingertips, but here's a start:

Euphonius JH600
Model year 2009 (reportedly the last one off the line)
Stalling pattern:
30 second stall: always
downshift/slowing stall: maybe once in 8 deceleration/stops; particularly vexing/dangerous if I'm downshifting and engine braking in a turn, as the rear wheel can briefly "chirp" and lose traction.
other stalling: rare.

also: as noted before, LZD in Shanghai had told me repeatedly back in 2010 that Jialing would be "updating" the ECU firmware toward the end of 2010, and several of us were focused on this. LZD said this was as much a commercial issue between Jialing and Bosch as a technical one, and that the key question was whether Jialing would agree to pay Bosch for the necessary firmware upgrade. This promised upgrade never came, then Jialing upgraded the EFI design in the 2011 model year, redesignating the bike as JH600A. Those of us with 2010 and earlier models were told, "No upgrade coming. You are sheet out of luck."

I'll have more complete information to you in a week's time.

cheers!