Aeromotive VaporWorx Triple Fuel Pump Returnless Pulse Width Modulation Fuel Module Controller Kit

Stand-Alone MAP-Referenced Triple Pump Fuel Control for High-Horsepower Returnless Builds

The Aeromotive AER66142 VaporWorx Triple Pump Returnless PWM Fuel Module Controller is a complete electronic fuel pump management system engineered for builds running dual or triple aftermarket 340LPH in-tank fuel pumps in a returnless configuration. The AER66142 replaces the need for external regulators, return lines, Hobbs switches, and relay banks with a single controller that reads manifold pressure through its included stand-alone MAP sensor and dynamically adjusts fuel pump speed to maintain a 1:1 manifold-referenced fuel pressure across the entire RPM and boost range. The system uses OEM Delphi/Aptiv connectors throughout, operates on 10 to 22 volts to support voltage booster applications, and integrates directly into the factory ECM to preserve all OEM safety functions. The AER66142 also includes automatic over-temperature and short circuit protection with self-resetting logic, making it safe for sustained high-duty cycles in demanding build environments.

Key Features

• Complete stand-alone returnless fuel control for dual or triple 340LPH Aeromotive in-tank fuel pumps
• MAP sensor-based 1:1 manifold referenced fuel pressure control
• Auto-On Pump 2 output activates at 4psi of boost, no Hobbs switch or relay required
• Up to 66% reduction in pump power consumption at idle and cruise versus traditional systems
• 80A minimum continuous power rating in a compact 4.5 x 3.5 x 2 inch housing
• 10-22V operating range compatible with voltage booster systems
• Over-temperature and short circuit protection with automatic self-reset
• OEM Delphi/Aptiv connectors and UL94-rated components throughout
• Cross-linked polyethylene wiring for heat and chemical resistance
• No return lines, external regulators, or additional wiring modules required

Specifications

What's Included

• AER66142 PWM fuel pump controller module
• Stand-alone MAP sensor and mounting bracket
• OEM-style Delphi/Aptiv wiring harness and connectors
• All hardware for installation
• Aeromotive/VaporWorx installation documentation

About Aeromotive

Aeromotive is a US-based fuel system manufacturer producing pumps, regulators, filters, and controllers for performance and racing applications. The VaporWorx line of PWM fuel pump controllers was developed by Aeromotive to bring OEM-grade, ECM-integrated, returnless fuel system control to the aftermarket performance community. Aeromotive products are used across a wide range of applications from street performance builds to professional motorsport programs.

Frequently Asked Questions

The AER66142 is designed for use with Aeromotive's line of 340LPH in-tank fuel pumps in dual or triple pump configurations. It is not designed for use with OEM fuel pump modules. The controller requires that some bypass fuel volume be available through the pump hanger to maintain closed-loop PWM operation at idle and cruise.

No. The AER66142 is a returnless fuel system controller. No return line, external fuel pressure regulator, or bypass loop is needed. The system manages fuel pressure electronically via PWM control based on the MAP sensor input, eliminating the need for return-style plumbing.

Yes. The AER66142 operates across a 10 to 22 volt range, making it fully compatible with aftermarket fuel pump voltage boosters such as the Kenne Bell Boost-A-Pump or similar units. Running a voltage booster with the AER66142 can increase pump flow output while the controller maintains proper pressure regulation via PWM adjustment.

The AER66142 monitors boost pressure via the included MAP sensor. When boost exceeds 4psi, the controller automatically activates the Pump 2 output to bring the second pump online without any Hobbs switch, relay, or additional wiring device required. This happens seamlessly in the background as part of the controller's closed-loop management logic.

Yes. The AER66142 is designed to integrate directly into the OEM ECM using OEM Delphi/Aptiv connector interfaces. This integration allows all factory fuel system safety systems to remain fully functional. The controller operates transparently within the OEM architecture so the ECM continues to monitor and protect the fuel system as designed from the factory.

Horsepower support depends on the specific fuel pumps used, boost level, fuel type, and injector sizing. As a triple pump controller, the AER66142 is capable of supporting very high horsepower builds when paired with three Aeromotive 340LPH pumps. Contact Aeromotive technical support directly with your specific build parameters for a definitive fuel system sizing recommendation.

The AER66142 is a controller only and does not contact fuel directly. Compatibility with E85 depends on the fuel pumps, hoses, and fittings used in the system. Aeromotive 340LPH pumps are E85 compatible, and the AER66142 controller can manage them in E85 applications. Verify that all fuel-contact components in the system are rated for ethanol compatibility before use.

Yes. Removing the vacuum line or disconnecting the MAP sensor wiring from the AER66142 places it in constant pressure mode. In this mode the controller maintains a fixed fuel pressure set point regardless of manifold pressure, which is useful for certain naturally aspirated or carbureted applications where manifold referencing is not needed.

Installation Instructions

1. Mount the AER66142 controller in a location with adequate airflow away from direct heat sources and protected from moisture intrusion.
2. Connect the main power and ground wires using the supplied OEM Delphi/Aptiv connectors to a fused 80A minimum circuit from the battery.
3. Install the stand-alone MAP sensor on a vacuum port connected to the intake manifold. Secure with the supplied bracket.
4. Wire the MAP sensor signal to the designated MAP input on the AER66142 harness.
5. Connect Pump 1 and Pump 2 (and Pump 3 if applicable) outputs from the AER66142 to the corresponding fuel pump positive leads.
6. Connect the turn-on circuit from the AER66142 to the ignition-switched power source per the installation diagram.
7. Connect the ECM interface wiring to integrate AER66142 operation with the factory fuel system safety logic.
8. Set the base fuel pressure using the controller's adjustment potentiometer to the desired idle pressure (42psi default).
9. Start the vehicle and verify fuel pressure at idle using a fuel pressure gauge. Confirm MAP referencing by monitoring pressure rise with throttle application.
10. Road test and confirm Pump 2 auto-on activation by verifying pressure stability under boost conditions.

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.