This kit includes everything you need for a vacuum assisted power brake system in an electric vehicle, or to enhance the performance of braking systems in internal combustion vehicles.
The kit comes with all the components needed for a complete vacuum assist solution. This includes an ultra-quiet pump, reservoir, automatic shutoff switch, relay, fuse, and tubing. Most pumps used for vacuum assist produce a noisy drone that diminishes the elegance of quiet electric vehicle operation.
The spec where this pump really shines is the speed of drawing down the vacuum. Other high-quality pumps list specifications of being able to draw down a 2L system to about -15inHg in approximately 6 seconds. This pump draws down a 2L system to -15inHg in 1.6 seconds!
The pump has a noise level of 70db at 1ft. A commonly used “Thomas” pump measurses 90db at 1 ft. This means our high performance pump is about 10 times quieter than a Thomas pump (each 10 DB represents a lessening of the noise level by half). The system uses a muffler with a dampening oil that also lubricates the pump. The oil type is ATF, e.g. ESSO ATF LT 71141. The oil does not need to be replaced, but if this is necessary, it should be a low viscosity type such as mentioned above, 12cc in volume.
Another important factor though is the time the pump is on. This powerful pump comes on for just seconds (typically around 1s with a press of the pedal), compared to several or more seconds with a pump such as the Thomas pump mentioned. This means you have a lower magnitude of noise for less amount of time, giving you a substantially quieter system!
These parts have been chosen for their professional appearance and performance, while still being a cost effective solution.