Why my question ? Had my 2 ECU's loaded with Meinolf's latest mapping, by him. Did a few rounds with tuning on my Rosso Corsa, and she is running Very good. Did the same tuning on my Greenie ( quite a few times ), idling perfect and Very strong after 3000. Did buy a new Carb tune,, much better than my Twin Max. BUT from idling up to 3000, she is not happy with the right cyl. So what you are experiencing, had me wondering,, ( again ). I'm quite sure my tuning is on course,, so coud it be the mapping ? I have a brand new TI ECU, so will try that one, when the weather permits.
Will report back after the test
Cheers tom.