" From: Tom Jennings <tomj@xxxxxxx> " " " Notice that fuel injection didn't really become practical until " microcomputers became tiny and cheap. The Bendix systems of " the 50's were very simple electronics -- and they didn't work " for s**t. but the bosch of the late '60s was afaik essentially a transistorized bendix, and it worked great. my folks had a pair of '71 saab 99s - one with, one without [long story]. the jetronic one had more power, better driveability, better mileage, and more octane tolerance. and the longblocks were identical; only the intake and associated bits were different.o bosch k-jetronic of the mid/late '70s was also a good system, though i have no personal experience. digital efi has mass-production advantages - use the same ecm across the board with only program differences - and with obdII they're flash-loadable. finally, the digital age coincided with increasingly tight emissions limits around the world, not just here, and makers finally woke up to the concept that an inherently clean engine was both cheaper to build and more trouble-free on the road. ________________________________________________________________________ Andrew Hay the genius nature internet rambler is to see what all have seen adh@xxxxxxxxxxxxxxxxx and think what none thought