[BMW Atlanta]

Good luck on getting it reliable on the R12S. Not sure why but we've been totally unsuccessful at getting the RBIII to work on multiple R12S's and haven't got alot of support as to why they won't. RBIII did work miracles on my HP2E and many customers HP2/GS's, but was a major liability for Nate's R12S race bikes, so we stuck with our "BMWMA Power Commander" proprietary setup on the race R12S's we set up.

As for the original question, not sure what the interface looks like on the new R12GS PCIII. It may have blocked out areas not mappable by the end user for EPA/CARB compliancy which means it will not be optimal for the R12S would be my guess. However an unblocked/unrestricted PCIII USB model adapted for an R12S with a very delicately custom developed map would work quite swell as it's been on the race bikes for the past 1 1/2 years.