The "problem" with that is you still can't just swap PGM's. The PGM-IV and PGM-III are programmed to run TB and TA carbs accordingly, and the MC28 runs considerably richer than an MC21, so the air correction is different.

We have run bikes and swapped "similar" PGMs (II's and III's) though, i.e. stock and HRC, and seen changes, but again, you can't do it without spending time on setup.

The long and the short of it is, the MC28 doesn't perform as well. It's a fact.

This is still one of the best (not the best) MC28 250s we've set up:



That's pretty much by the 94~95 HRC SP book, but without the million dollar AC generator. About as good as a stock MC21R, with a slight increase in peak and over-rev. It's not a very compelling argument.

The MC28 is a great road bike, and better than any other 250, but it was just a show-piece exercise at the end of the NSR's life-cycle. I would still have one over ANY other 250 however, and a Rothmans SP is still probably the best looking road 250 ever, even with its bendy swingarm!

Just telling it how it is!
_________________
Andy.
NSR-WORLD.COM

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