These are the S55 Tune numbers I have (US):
405hp/406lb-ft M2C
425hp/406lb-ft Base M3/4
444hp/406lb-ft Competition Pkg M3/4
444hp/406lb-ft M2cs
454hp/442lb-ft M4cs
500hp/442lb-ft M4GTS (with water injection)
Agreed - People forget the M2C's S55 is de-tuned.
