A thread from the M5 folks,
https://f10.m5post.com/forums/showthread.php?t=1395678
If you want to chat about my experience or want contact info for the team at RKAutowerks shoot me a PM. Wishing ya much success.
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2015 F06 M6 Silverstone Metallic II, Individual Full Leather, B&O, Night Vis, CCB, RKAutowerks (CP Rods/Pistons, DI Cams, CF Intakes, Coated DP's & Billet Diff Brace), InfinityAuto Turbo Inlets, Mishi Oil Cooler, JB4, XHP S3, BM S3