No reason why you can't register! Just because you don't have/want an NSR, it doesn't matter, we don't discriminate! :)
The NSR's PGM-IV E.C.U. is attached to the back of the display, and the card is needed to activate both the ignition and the display. There is no way to use the speedo without the PGM unit I'm afraid.
There have been a few instances of MC28's with failed PGM-IV's that have been modified to use an earlier PGM-III (MC21 - under the seat) but still use the PGM-IV for the speedo/trip meter/temp guage. This would indicate the ignition/RC Valve (powervalve) circuitry is a separate to the display circuitry, but you will still need a "swipe-card" to activate it.
Hope this answers your question.
Andy.
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