octane boosters?

The modern commercial kits use vacume or knock sensor to regulate injection rate, most are adjustable. the simplest setup uses a throttle position switch or rheostst or even a manual button or switch. I recall a street driven, big-block Ford that cruised Wilshire blvd. in West Los Angeles during the early 60's that had around 13:1 compression. It was a real terror. He'd come into my Shell station and buy windshield washer solution and mix it 50/50 with water in a 1 gallon glass bottle that was strapped to the firewall. He couldn't get above 3,000 rpm under load, without the injector to stop the ping. On a Friday or Saturday night he'd go through a couple gallons of "cool-aid" which is what he called the mixture. The Wickapedia article has a lot of interesting info. especially the part about the 6-cycle engine that runs on fuel and steam. 100 low-lead gas is still readely availible at almost every airport. M