New VaporWorx DualX Fuel System Controller.

[CarlC]

In order to simplify installation and increase overall fuel system performance for dual fuel module applications, vaporworx now offers the new DualX pulse width modulation controller design. This new feature will be the standard offering for all GM fuel module systems: Gen5 SS/ZL1, CTS-V, CTS-V with dual DW300 equipped pumps, and CTS-V with dual equipped AEM pumps. Dual TI267 / Walbro 450lph systems are in process.

What makes the DualX different than previous controllers? Instead of using a Hobb's switch and relay to connect the second fuel module under higher fuel demands, the DualX instead uses a progressive ramping strategy. There are Pump 1 and Pump 2 connections on the VaporWorx controller for the Primary and Follower pump. The Follower pump runs at 25-30% duty cycle behind the Primary. This allows the Follower pump to be on at all times, but mostly at a very low duty cycle. This means the pumps in the Follower module will continually fill the reservoir with fuel so it is ready to feed the engine under the most challenging track conditions at very low liquid levels.

As the Primary pump increases in duty cycle, so does the Follower. Once the Primary pump is at 100%, the Follower will continue to increase to 100% duty cycle as needed.
Intended to be used in a manifold referenced mode, this arrangement has the same power requirement at idle and cruise as a single module running at 60psi constant, so very little heat generation. This leads to longer pump life and lower fuel temperatures.

Also included with this design is the new VaporWorx Strongbox, a heavy-duty cast aluminum enclosure with laser etched connection information and screw-on lid. The connection terminal size has also been beefed-up to use brass #8-32 screws.