http://www.aquatune.com/

No, but I'd have to tear one apart and see it with my own eyes to believe it.

Quote from "AquaTune -- How It Works"

This system is 60% hydrogen production and 40% water injection. The water is brought up to the processor by venturi vacuum which is created by a venturi injector nozzle. This, then, maintains a strong vacuum signal to the processor all the way through the power band. This vacuum is pulled through the processor at 1200 feet per second. This air enters into the resident echo chamber where the tuning fork is located. This keep the frequency constant.

As the water is brought into the echo chamber, the water is violently torn apart by cavitation and frequency as well as a static charge. This, in turn, loosens the bond between the hydrogen atom and the oxygen molecule. Hence, the cracking of the water. This cracked water now enters into the hydrogen generator powered by a 12 volt power source.

Because the water is cracked, it is extremely easy to separate the hydrogen from the oxygen using only 1.5 amps to produce 2.5 Liters of hydrogen per minute. There are two functions to the hydrogen generator: a small pass-way in the generator allows a portion of the cracked water to pass through. This stabilizes the hydrogen. This, then, expands the fossil fuel during the compression cycle. When this mixture goes though the combustion cycle you have a more complete burn rate and, because of the higher compression and a cooler burn rate, you have more horsepower.

Quote from "AquaTune -- FAQ"

1. How does this system work?
Allow us to give you just a brief explanation of how the system works.  This system consists of a barometric echo chamber which will allow for high altitude driving and will, also, automatically adjust to sea-level driving.  The system will adjust to engine loads down to 2.9 inches of vacuum.  This echo chamber gives off high sonic frequencies when vacuum goes through the chamber.  This in turn enters the water charge chamber in which is an internal tuning fork.  Incoming air velocity collides with this tuning fork at 1200 feet per second which in turn vibrates the tuning fork violently.  This results in the cracking of the water which enters into the hydrogen generator making this system more of a fuel cell than a water injection system.  Do not be alarmed if you hear a loud  "hissing" noise coming from the processor as this is frequency  velocity and is necessary for the cracking of the water.  It is not a vacuum loss.  This is the same principle as an opera singers correct frequency shattering a glass.  The result is hydrogen suspension and the only ingredient left is pressure and heat to release its full energy from the combustion.  The AquaTunePlus unit creates both hydrogen suspension and flammable gas.

If the water separates that easily into HHO after being "cracked", why wouldn't they just sell complete petrol replacement kits.  Not quite buying their explanation.

Quote from "PayPal"

AquaTunePlus Water Injection Service
Item total $778.50
Shipping and handling: $24.80
Total $803.30 USD

There you go if someone wants to vote with their wallet.  BTW, they won't let you install it.  You have to use one of their qualified distributors.

I filled out their little contact page at:
http://www.aquatune.com/contact.php

And asked them why if they have invented a technology that clearly exceeds Faraday's Law are they only shooting for 30% fuel economy improvement when they could easily replace petrol for water.

I don't expect a reply.

Cracking water is what Stan also said to do with his plug. And using cavitation, static fields and frequency are the key players as we have seen in other patents.

One should measure there outflow etc and the consumption. If it is something, they should have independent confirmation, and scientific proof.

I don't see such on their site. So they talk the right talk but where are the confirmations as we like to see them from the real (objective) science side?

valid and good to improve with our H2O hacker brains