I would describe the DMS crowd as more sober (not in the intoxicated sense), more serious.Honda's were cheaper and had more parts available, so they became more popular 'tuner' cars (tuner used vaguely) It's self fulfilling: more popular, thus more common parts, thus more modifications...
If they still do it, i would consider sending it in to the dsmlink people for repair, since its socketed. Or you could do the conversion to use 1st gen ecu's with a 90 car. If you can, stick with the eprom or socketed ecu's. Make sure the other ecu's have all you want for your car: knock sensor...
If you want to safely test if your battery is dead (aside from a battery tester), just borrow a friends good battery for a few minutes and try it out.The alternator puts out 'dirty' power. Its ugly and jagged-spikey. The battery acts as a stabilizer: when spikes are low, it gives up some...