Yesterday, 11:51 PM
Another idea is that if the problem is related to an area of the ECU that the custom tuners cannot access, maybe a friendly AMG shop is willing to fix the throttle sensitivity and tuning gemlins? They'd have access to everything. The risk would be loss of warranty due to mods I guess.
I'm meeting my tuner next week and will discuss with him. I'm also friends with the national manager for Mercedes parts so can also ask him too - however - I'm in New Zealand so the answers I get might be of limited benefit to you in the US.
I'd think "friendly" dealer workshop co-operation down here is quite possible if one could be found that is run by a performance enthusiast lol... for bolt ons/retunes anyway. I think a blower would be a push too far so will wait till the 2 year warranty expires in late 2015 before going that route... though will ask