Quote from the VIBRATOR web site...
"As most cars have a power supply providing between 12 to 14,5 Volts and with all the cars electrical components running at the same time electricity can actually run short for brief periods of time. Even though this occurs for only a fraction of a second it is still enough to disturb the combustion process of the engine. This will cause an increase in CO2 emission. A car engines combustion is controlled by a micro computer called an ECU (Engine Control Unit). The ECU continuously calculates the optimum air/fuel ratio in order to achieve the most efficient combustion process at all times and thereby reduces the CO2 emission.
The ECU needs between 13.5 V and 14 V continuously in order to calculate the air/fuel ratio. At steady driving it is no problem for the power supply to continuously generate a voltage within this interval.
Unfortunately steady driving is not actually possible. In normal traffic the driver often has to brake and accelerate over and over again. During the acceleration the voltage from the cars power supply will reach levels below 13,5 V for a fraction of a second resulting in the ECU briefly stopping calculations for the optimum air/fuel ratio. There will be thousands of these small calculation breaks on every normal drive.
The core of the VIABTORs technology is based on voltage compensation principals. A bespoke electrical circuit has been developed to stabilize the voltage from the cars power supply thus eliminating the brief outages of the ECU."
Its well written but 99% bollox, most chips run on 5v and it would not stop processing for a split second just because the supply dipped a bit.
The ONLY thing this plug can be is either empty OR a large value capacitor along the lines of those used by the big-bass hi-fi boys to smooth out the ridiculuos drain they place on the battery. Now a capacitor will do no harm, may even do some good, but it wont affect your mpg:doh: