When you install your new ecu I would suggest ditching the screws in favor of Velcro. Unfortunately I figured this out after fitting the new ecu.

I have not played around with the software but likely need to to merge the maps.

It is hard to tell what did what but the engine is transformed to me as the power is much more linear and the below 3k feels much more lively. I had the factory stage 1 which was good but much better now.

It is a shame we don’t have a tuner like the two options in the UK in the US

2017 M3W Sport Green