WOW! Did not expect this at all.
I cut my drive a bit short because I was dying to try acetone but the isopropyl did incredible.
I drove 131 miles on 7.5 gallons which yields 17.5 mpg city, to my old 13.7. I disconnected the battery before hooking up the unit, then hooked up the unit and let the computer do the work. An improvement of almost 4 mpg is so much more than I had expected.
My ingredients were simply 50/50 distilled/isopropyl(70%) and ran this into my vacuum line at the pcv valve. Engine operation was much smoother and idle was improved.
I just started it up with 50/50 distilled/acetone(100%) and the engine didn't seem to like it much but I think it might be too strong of a mixture. If I use maybe a 70/30 distilled/acetone(100%) mix, it might help the engine to handle the vapors. I'll see if operation improves, and if not, I'll refill the tank, use a more diluted mixture, and see what engine operation shows.
So far I'm absolutely fascinated about how much easier this was to do than using hydroxy gas. I give every bit of respect to those that have made it work for their cars, but it was very tough to get it to work for mine. I went ahead and tried a new simple design and the gains were great.
I'll continue trying different chemicals and keep everyone posted!