What are you looking for exactly? The serial numbers on stock PGMs are all but irrelevant. Any PGM-I will work on any 1988, any PGM-II will work on any 1989, any PGM-III will work on any MC21, and any PGM-IV (with corresponding card) will work on any MC28.

Only if you try tarting about with HRC PGMs will you have problems. They DO NOT work on standard bikes, and standard PGMs are perfectly capable of in excess of 70hp.

There was a myth long ago about the PGM-III with the red serial code being a better unit, but we've tried them all, and there's no detectable difference! I'm not saying different codes aren't different inside, but the difference is undetectable. It could just be something as simple as different capacitors or PCB routing!
_________________
Andy.
NSR-WORLD.COM

Please keep all responses to Forum posts on the Forum so that others may benefit.

Please DO NOT PM me for technical advice. My time is precious, and you will probably receive a faster response on the Forum anyway.

Check us out on Facebook! Please "like" our page!