Regarding the OG M2 on track and power reduction issues, lack of N55 cooling, etc, paradoxical did probably the most extensive dive into the issue with his track build a number of years ago. Here's a link to a specific post on the subject within his build thread:
https://f87.bimmerpost.com/forums/sh...8#post21284898
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Current Stable:
2024 G20 M340i Melbourne Red/Cognac
2019 F87 M2 Competition 6MT, LBB, slicktop, exec pkg
2007 E91 328i Silver, slushbox, Eibach fr/E93 M3 rear sway bars, ARC-8