Unless you are shifting early, I don't see how you're engine isn't heat soaked. I used shift my 330 early as an intermediate driver. It ran hard all day long. When I got into the advanced run group, I keep that tach pinned on the redline. I have an heavily upgraded cooling system, w/a injection, heat exchanger, push and pull fan. I'd get heat soak by the second session.
I have temp issues with my m3 stock. The DCT starts getting slow and my redline pulls. I don't see how adding an inter cooler with a 50% bump in power won't heat soak the intake charge?
2015 F34 328iX GT Glacier Silver
2011 E90 M3 Monte Carlo Blue
2004 E46 M3 Imola Red