Any engine man these days, no matter how young or old, will have at least a pretty good idea of how electronic fuel injection works. With its speed, temperature and pressure sensors, maps and ECUs, the digital nature of the technology is well understood by many. Go back though say, 40 years and although a good many so-called engine tuners will have thought they knew about fuelling systems, when it came down to it, the complexities of the carburettor required a very special kind of...