Flywheel fun
One of the coolest bits about the NSR250 MC28 is the smart card PGM IV ignition. One of the least cool bits about the NSR250 MC28 when it comes to tuning is the smart card PGM IV ignition. All you need is an hrc P-030 card and the bike is fully derestricted. With a wire splice you even get your lights back. Unfortunately hrc cards are like hens teeth and even if you did find one, the speedo becomes one big temp gauge so making the bike even less popular with the law on the road. Clearly the thing to do here is to bin the PGM IV unit and buy a programmable ignition unit like the one offered by Zealtronic . Plug it in, book some dyno time and happy days your bike isn't only derestricted, it now has an optimized ignition curve with exup valve opening times to match! But that does away with the smart card and that was one of the coolest things about the MC28 wasn't it? The HRC card might be an idea for the future but for now there are a few things I can do. First off w...