Water/alchol injection

[Excaliber]

I have a modern vacuum advance MSD (plus mechanical advance) distributor. It's called (I think) the 'stand alone' model. It does NOT require a MSD electronic box to run, just wire direct to your coil/battery, or you can run it through an MSD box if you choose too. I went this route as a backup system should the MSD electronic box fail plus I wanted the vacuum advance unit as well.

Now George at Gessford CAUTIONED me about using the vacuum advance, he doesn't typically like these units and sold it to me somewhat reluctantly. The concern is getting TO MUCH 'total' advance under certain conditions as it's very hard to tell when and how much advance the vacuum portion actually supplies at any given time.

I researched the specifications carefully, hooked up a vacuum gauge I could read in the cockpit and tested the whole thing under various conditions. I'm happy with it, but like George, I wouldn't say it's for everybody.

[AMF]

Running a water/meth injection by itself won't bring you any more horsepower, but the ability to alter the tune to a more agressive state will.

Generally speaking, if you're running 14 psi in the South Florida heat and you want some added assurance that you won't get detonation when you run uphill, in 4th gear and low rpms....then you can add a water/meth injection.

You can do the same thing with a small nitrous shot. The rapidly expanding gas helps to reduce intake temps quite a bit. You see this A LOT with ricers who love to run 30+ lbs of boost with turbos and such. They'll throw on a 50 shot, not necessarily for the power (though it helps) but more so they can cool down the charge and go after more boost.

Cooler intake temps help guard against pre-ignition and detonation.

A water-meth kit will allow you to safely run 12 psi where maybe it was only safe to run 8 psi before.

You might also be able to get away with more timing, where it was risky before.

Thus you're able to make more power, not from the water/meth itself, but from the ability to add more air/fuel and more timing by cutting the likelihood of pre-ignition and detonation.