Aeromotive 66131 BoostWorx Returnless PWM Controller for Ford Mustang GT Coyote

Vehicle Fitment

• Ford Mustang GT and Ford Coyote crate engine applications (Gen1-3, naturally aspirated or supercharged) using the Motorcraft PFS1215 fuel module

Fitment Notes

• Application is engine/fuel-module specific rather than tied to a fixed model-year range; confirm your fuel module matches the PFS1215 (or equivalent Gen1-3 Coyote module) before purchase
• PFS1215 fuel module can also be used in non-Coyote swap applications (hot rod, LS, SBF builds)
• Not recommended for use with an inline fuel filter on integrated fuel modules - most factory fuel modules (except Gen3 GT500) already include a final filter

Features

• Stand-alone, manifold-referenced, OE-type returnless fuel control system
• Manifold-referenced fuel pressure changes 1:1 with boost, up to 25 psi
• Delivers 42-60 psi base pressure, adjustable to a wider range if needed
• Minimum 50% reduction in power to the fuel pump during idle and cruise
• No relays, external regulators, or return lines required
• Includes billet aluminum MAP sensor bracket and 3-bar pressure sensor
• Over-temperature shutdown and short-circuit protection, both with automatic reset
• OEM Delphi/Aptiv connectors and cross-linked polyethylene wiring throughout

Specifications

• Operating Voltage: 10-22V
• Continuous Power Rating: 40A minimum
• Controller Size: 4 in L x 2.1 in W x 1.625 in H
• Base Fuel Pressure: 42-60 psi
• Boost Reference: 1:1 manifold-referenced, up to 25 psi
• Compatible Fuel Module: Motorcraft PFS1215 (suggested)

Included Components

• 1x BoostWorx Returnless PWM Controller
• 1x Billet Aluminum MAP Sensor Mounting Bracket
• 1x 3-Bar MAP Pressure Sensor
• Wiring and OEM-style Delphi/Aptiv connectors

Product Description

The Aeromotive 66131 is a stand-alone returnless PWM fuel pump controller built around the Ford/Motorcraft PFS1215 fuel module, giving Coyote-powered builds an OE-style returnless fuel system without needing a separate fuel pressure regulator or return line. It behaves like a manifold-referenced mechanical regulator - connect the included MAP sensor to the intake manifold, and the controller adjusts fuel pressure automatically as boost changes.

This kit is particularly relevant for Ford Controls Pack Coyote crate engine installs, which call for manifold-referenced fuel pressure but don't include a factory Fuel Pump Driver Module. The 66131 fills that gap electronically, supporting naturally aspirated and forced-induction applications up to 25 psi of boost, while also offering a constant-pressure mode if manifold reference isn't needed.

It's suited to builders doing a Coyote engine swap or running a Ford Controls Pack crate engine who want OEM-style fuel delivery behavior without fabricating a custom return-style system. Installation requires wiring the controller to the fuel pump module and running the MAP sensor hose to the intake manifold - full instructions are provided by Aeromotive.