Back when I was running nitrous on my cavalier, I came up against a problem. The '91 2.2 has 1 injector and low fuel pressure which caused me to lean out. I then hooked up a propane bottle, ran a line to the fuel soleniod, and tried it out. It took some tuning but it worked great.In all I ran close to a 80 wet shot on stock internals and a stock pump. I'm just curious if anybody's played with propane to cure lean conditions.