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Home / Shop / PWM Controller Kits / LS/LT/FPDM/OEM PWM Controller Series Engines – Ally Fuel Module Controller
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LS/LT/FPDM/OEM PWM Controller Series Engines – Ally Fuel Module Controller

$429.00

Use the OEM Fuel System Control Module in your dual module car by using the Ally “Piggyback” PWM Dual Fuel Module Controller. The only kit on the market today that allows the OEM FSCM to control all fuel modules.

SKU: PWALLY-DUALXFM Categories: Ally Dual OEM Fuel Module Controllers, Cadillac CTS-V2 Fuel Modules, Chevrolet, Corvette C7 Fuel Module, CTS-V2, CTS-V2, Dual OEM Fuel Modules, Gen5 Camaro, Gen5/6 Camaro, Gen5/6 SS, All ZL1, and CTS-V3 Fuel Modules, Gen6 Camaro, GM Truck Fuel Modules (from FSCM Equipped Vehicles), Hot Rod, Restomod, and Universal Kits, Hot Rod, Restomod, and Universal Kits, LT-Series PWM Controllers, OEM FSCM Piggyback Controllers, PWM Controller Kits
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Description

Compatibility: For use with anyĀ OEM fuel system control module (Ford, GM, etc.) when usingĀ OEMĀ fuel modules. Click here if you are using aftermarket fuel pumps. This kit will also work with the OEM CTS-V2 fuel module when using aftermarket high-flow pumps like the AEM or DW300 pumps.

The newest series of GM and Ford engines and engine control systems are some of the greatest technology available today. But, like all gearheads, we usually want more, right?

Unfortunately, the OEM Fuel Pump Pressure Modules (FPPM) and Fuel Pump Driver Modules (FPDM) included in the GM, Ford, and other OEM wiring harnesses, leaves much to be desired when more fuel is needed. They do not have sufficient electronics power capacity and insufficient power terminals to supply high-power applications.

This kit allows the FPPM/Ford FPDM or other OEM PWM output fuel computer to control the primary module, while theĀ VaporWorxĀ Ally controller “Piggybacks” and takes care of the second. The Ally takes its operating commands from the FPPM/FSCM to tell it how toĀ operate. No user programming or system changes are needed.

When used in this way there is sufficient power for all fuel modules while maintaining full FPPM/FPDM CAN feedback and diagnostics. All pumps will effectively be under the control of the FPPM/FPDM. This arrangement typically eliminates MIL codes caused by too much power being required by the FPPM/FPDM. This is a popular way to use high-output pumps (Deatchwerks and AEM) in Cadillac CTS-V2 fuel modules. Use the FSCM to drive one pump, and the VaporWorx Ally controller to drive the second pump. Gen5/6 Camaro and Gen2 CTS-V platforms are well suited for this modification.

With just a single 20ga wire to attach to theĀ FPPM/FPDMĀ fuel pumpĀ +,Ā it’sĀ just battery power in, and fuel module power out.Ā No on/off switch, etc. It just follows theĀ FPPM/FPDMĀ once it turns on and controls the secondary module.

IfĀ you’reĀ thinking of future power upgrades for your LT4, or doing a fresh LT5 installation, dual fuel modules are a great way to do the job once and be ready to go. Other applications needing e85 and working with the OEM Fuel System Control Module (Pump+ pulsed)Ā  and other OEM FPPM/FPDM’s, this kit should suit your needs.

This kit will also work to eliminate MIL codes when using the high-power AEM or DW300 pumps in the CTS-V2 platform. These pumps often cause check engine codes due to excessive power demand. For this situation, the OEM FSCM drives one pump while the Ally controller drives the second pump. Hence, the power is split between them and eliminating the trouble codes.

It is strongly suggested to NOT use an inline filter with with OEM fuel modules except Gen3 Coyote GT500. Final filtering is built in. Some aftermarket fuel filters have a built-in check valve which will cause a heat-soak related overpressure condition that will lock up port type fuel injectors.

Features of the kit include:

  • Everything needed electrically to drive the fuel pump module. No relays, external regulators, or return lines needed.
  • Unmatched low fuel level capability.
  • A 2/3 reduction in power to the fuel pump during idle and cruise vs traditional systems.
  • 40A minimum continuous power rating in a compact controller package. Total size 4ā€L x 2.1ā€W x 1-5/8ā€H.
  • Over-temperature shutdown with automatic reset.
  • Short circuit protection that will operate indefinitely without damage.
  • OEM Delphi/Aptiv connections for terminals, seals, and connector bodies where appropriate.
  • All cross-linked polyethylene wiring.
  • UL94 rated components used throughout.
  • 10-22v operating capacity. Can be used with voltage boosters. The preferred booster is the JMS FuelMax.

Below is a basic layout diagram using Gen5 Camaro ZL1 fuel modules. Other fuel module layouts will be similar. Please specify which fuel modules are being used. For CTS-V2 chassis, there will not be two fuel modules, just one. The intent is the same where one pump is driven by the FSCM, the second by the Ally controller.

SKU: PWALLY-DUALXFM

This product has dedicated documentation available:

Click the button to view the documentation, or click hereĀ for download options.

View the Documentation

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Resources

Resources

Documentation Downloads

PressureWorx Ally Dual Fuel Module for LT-Series Crate Engines (PWALLY-DUALXFM) Instructions

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Recommended Reading

We created the 10-part informational series "Fuel Delivery Systems - An Understanding," which covers important basics related to fuel delivery systems.

This series is one of the many resources available in our comprehensive Resource Hub, which you can check out to learn more about fuel delivery systems & our products!

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If you have questions about compatibility, or want to see what PWM Controller Kits are available for your build (including future changes, like adding more horsepower) try our PWM Controller Kit Selection Tool.

Further Information

For more information, please have a look at our FAQ, or feel free to contact us with any questions.

If you are wondering about compatibility with your build, or are interested in a made-to-order part (including customizing this product or any others), click here to get a free application-specific custom recommendation.

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LS/LT/FPDM/OEM PWM Controller Series Engines – Ally Fuel Module Controller

$429.00