[Trevor]

A few things.

- Methanol kicks denatured in the butt. If I remember right denatured is only 8% Methanol and 92% Ethanol. Both Ethanol and Methanol are 100 octane but for some reason methanol has alot better knock reduction capabilities. I believe its because methanol mixes more readily with the charge air so you're able to get more in the motor without bogging it. There's more energy to push down a piston with Ethanol but for knock reduction pure Methanol is where its at.

- Propane gas provides a hair more energy than the alcohol but still has much less than gasoline. It's usually quoted at around 104 octane.

- Stoich with gas is 14.7:1 (duh). Propane is 15.7:1, Ethanol is 9:1, and Methanol is 6.45:1. Don't let that throw you with your wideband though...widebands are calibrated so that stoich with ANY fuel is always 14.7:1. That means that if you had a motor idling perfectly on pure methanol (no gasoline) your wideband would show 14.7:1 even though the true Air to Fuel ratio was 6.45:1. That also means that you shouldn't change your target A/F's while running a supplemental fuel injection.

- Corrosion from methaol is hard on the injection systems. I think the previously mentioned derekdevices kit is the onlyone that claims compatibility. Not sure if it will truly hold up to years of use.

- SMC's setup now has progressive control and a positive feedback "On" light that uses a hobbs switch to tell you for sure if there's pressure in the lines or not.

- Alcohol of any kind doesn't contain much energy and you will go thru it quickly when you've got it tuned optimally. I run two 7 GPH nozzles with the gasoline leaned out to compensate and my low alcohol light comes on after 9-11 full passes down the strip. That's with a 1/2 gallon reservoir and there's still a couple inches of alchy in the bottom when the light comes on. SMC offers a approx 12H x 8W x 5 one gallon tank for a few more dollars but I don't have room for it under the hood.

- The pumps in the SMC kit don't fare well if you let them dry out after using them for awhile. You have to keep them wet. I've lost two pumps to this over the years but SMC has been happy to replace them for a minimal fee. I'm not sure if the dereksdevices kits have the same problems. I believe gasoline fuel pumps are degraded when dried out too but it's not as severe as the pumps SMC is using. Just something to keep in mind.

I hope that helped you guys out. I'm thinking about making a alchy system around a 5 gallon fuel cell in the back of the car with a SMC controller running the show. Maybe finally find out if the long supply hose really causes a problem or not.