
I'm going the semi-digital way (electronic ignition, MAP, RPM, and wideband sensors), and did invest in an Innovate LM-2, which does all of that. Not particularly cheap, but I guess someone who is good with electronics (which I'm not), can build a cheap DIY solution. The software end is an other issue though, since most software to be found on the net, is meant for use in combination with an ECU...