So had another conversation with Thomas from
www.tmchiptuning.com today.
As expected the opf is not good for power. But it will work this way, EU and US cars will have slightly different ecu. In the end both will have the same power on the wheels, but the EU cars will be a tad stronger to compensate for the particulate filter.
He pointed out that BMW is lying to us either way, but in a good way. M3/M4 for example are stated to have 450hp. But in reality they do between 480hp and 490hp stock. Same will apply for the M2 competition, he‘d expect it to offer around 450hp right out of the box. It be super essy to get 500hp out of it without slightest danger for the motor.
I don‘t have in mind tuning it anyway as long as i have full warranty. But it‘s very good to know that there is a LOT of potential for the future. Especially since i plan to ride this car for at least 10y...