[kdog26372]

Nobody has cracked the ECU without having physical access to it. Thus you can't have a handheld device that would work. Piggybacks or if you live close to one of the reputable flash tuners are the only options and will be the only options. I loved the Cobb on my 135i, much better than any piggyback I've used in terms of consistent power.

I kinda wish my car was post warranty as I'd get a flash tune for sure as they seem to be getting great results. For now it's take piggy out for dealer visits and so far I've had zero issues with that approach.