Thanks for answering all those questions Fundahl!
The 1M from the factory has a pretty aggressive tune, so the gains aren't as big as the 135i and the overall power will be the same since they use the same engine. But, there is always room for a bit of improvement! At the top end of the power band, power is limited by the (under)size of the turbos.
Stock and Linear throttle maps are both available for the 1M.
Ian
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