We have already made all reservations, flight schedules, and plans with eight friends to meet us in Praha, after we drop the car off in Munchen. It's too late to change, I'm legally bound in this agreement, and will lose thousands, if I back out, at this time, or flip it when I receive delivery. Correct me, now, if I'm wrong.
I'm "stuck" with the car in which I fell in love, on a test drive. The thing is, unlike most, I keep and maintain my cars. I still have a 1983 VW GTi, a 1988 Merkur XR4Ti (Project car with 500 HP at the rear wheels), a 1999 Volvo V 70 R, and my wife's 2003 Jaguar S Type, all of which, I purchased new. I will have to live with the fact that, because of bad timing, I'll be driving somewhat of a lesser car than I could have.
Until reading your advise on the Renntech chip, I entertained plans on going to the headquarters, in Florida, this coming winter. Having already talked with a representative at Renntech, the plan was: meeting the owner, getting a tour of the facility whilst having the chip installed, and driving away in a proper GLA 45 with 414 HP and ~395 Ft/Lbs. of torque. Like you, Crabman, I'm afraid, without the AMG upgraded transmission and valves, the newest GLA 45's are getting, I doubt the drivetrain will last. Unlike you, however, I can't afford the cost of fixing what inevitably will break.
The bottom line is, most of the Petrol-heads I know, would love to be "stuck" with my new AMG (Ach Meine Gott, which is German, for OMG). I'm sure I'll have years of enjoyment driving it and the memories of exploring parts of Europe in it, with my wife, will remain priceless.