Hi all
I have MC28 with HRC card, but the engine RPM can not rev over 12000(red line). On the other hand. Two of my friends' MC21 with HRC wire harness moded, they can go up over red line to 13000 RPM. what's the problem is MC28? Do I have problem with my NSR MC28? or MC28 need HRC wire harness to support its PGM?

anyone having the same problem as I have???

Hung
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1996 HONDA RS250
1995 MC28 NSR250 SE red/white/green
1994 MC28 NSR250 sp W/ RS250 engine