I can't see how Water Injection could increase power, due to it decreasing the gasoline's flammability as well as volatility. Also, I was told that propane has a higher natural octane anyway, you may want to try increasing your ignition timing. As long as you don't go so far advanced you either make the starter work too hard, or create a detonation (pinging) problem, I'd try bumping the timing up a little. A friend and I installed a water injection unit on his old 78 Turbo Regal, and it did help by reducing knocking, which made the knock sensor happy. This kept the knock sensor from reducing the timing by preventing the knock in the first place. I would try advancing the timing first, odds are, especially with propane, you won't need the water injection. ----- Original Message ----- From: <Lib596@xxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Saturday, January 12, 2002 4:06 PM Subject: IML: Water Injection > Following on from Roy's recent message, here's a question that might be of a > lot of interest to us European Imperial owners in particular. > > I have two propane powered cars, a ' 61 Imperial and a ' 76 Eldorado conv. > (my daily driver) Both run fine on propane but there is about a 10 to 15% > loss of power and consumption (more noticable on the fuel injected Caddy.) > With the high cost of gasoline in Europe, running on propane makes a lot of > sense, but I would love to get the same performance as gasoline. Seems to me > W.I. could be a possible solution. > > I know W.I. is supposed to increase power. Can it also improve gas mileage? > > Are there any disadvantages I should know about like extra engine wear? > > How do you know how much water to inject? > > Could it would work with a propane powered car? > > Tony V. > > > > >