Fore Innovations L1E Dual Pump Fuel System (91-621E) - 2018-2026 Ford F-150 5.0L Coyote
Upgrade the fuel delivery capability of your 2018-2026 Ford F-150 5.0L Coyote with the Fore Innovations L1E Dual Pump Fuel System. Designed to support approximately 800-900 RWHP with dual fuel pumps, the 91-621E provides a complete standalone return-style fuel system capable of supplying both the High Pressure Fuel Pump (HPFP) and port injection system, with additional capacity for a small wet nitrous system when properly configured.
The L1E combines Fore Innovations' dual-pump in-tank supply system, billet fuel rails, upgraded feed and return lines, high-capacity filtration, check valve, HPFP T-block, and an F1i fuel pressure regulator capable of static, manifold, or boost-referenced operation. The in-tank system retains OE fuel transfer, fuel level sender, and EVAP functionality while providing the increased fuel delivery required by high-horsepower Coyote applications.
800-900 RWHP Dual Pump Fuel System
The Fore Innovations L1E is designed to support approximately 800-900 rear-wheel horsepower with a properly configured dual-pump setup. Fore recommends operating one fuel pump full time and activating the secondary pump under load, allowing additional fuel capacity to come online as engine demand increases.
This staged-pump strategy is particularly beneficial in street-driven applications because it avoids unnecessarily operating both high-output pumps continuously.
Supplies HPFP and Port Injection
The L1E is designed to supply fuel to both the High Pressure Fuel Pump and the port injection system on supported 2018-2026 F-150 Coyote applications. It can also support a small wet nitrous system when the complete fuel system is properly configured for the additional fuel demand.
A flow-through T-block is included for direct mounting at the HPFP inlet tube, providing the necessary connection for integrating the high-pressure pump supply into the upgraded fuel system.
F1i Fuel Pressure Regulator
The included high-capacity Fore Innovations F1i fuel pressure regulator provides flexibility for different fuel pressure strategies. Depending on the vehicle configuration and tuning requirements, the F1i can be configured for static, manifold-referenced, or boost-referenced fuel pressure regulation.
Correct fuel pressure configuration is critical to proper operation of the L1E system and must be matched to the intended application and tuning strategy.
Fuel Pressure Settings
- Static Fuel Pressure Regulation: Set fuel pressure to 43 psi plus maximum boost pressure, or 54 psi, whichever value is greater.
- Manifold-Referenced Regulation: Set fuel pressure to 54 psi at idle. The boost signal must be sourced after the throttle body.
- Boost-Referenced Regulation: Set fuel pressure to 58 psi with vacuum disconnected. The boost signal must be sourced before the throttle body.
- Applications Outside These Parameters: Fore Innovations recommends using an L2 fuel system.
Billet Fuel Rails
The 91-621E includes Fore Innovations billet fuel rails to provide proper fuel delivery to the port injection system, including applications using E85. Combined with the upgraded feed and return plumbing, the rails provide an important part of the complete high-capacity fuel delivery system.
Retains Key OE Fuel System Functions
The Fore Innovations in-tank supply system is designed to retain OE fuel transfer, fuel level sender, and EVAP functionality. This allows the L1E to substantially increase fuel system capability while retaining these important factory functions.
High-Capacity Filtration and Fuel Plumbing
The system includes an 88mm inline fuel filter, upgraded feed and return lines, a check valve, and the fittings and hardware required for typical fuel line plumbing. A total of 30 feet of fuel line is included, with the customer selecting the appropriate available fuel line type for the application.
E85 Capability
The L1E can be configured for E85 operation with the correct fuel pumps and filtration. E85 applications require F90000267, F90000274, or F90000285 fuel pumps AND either Microglass SSD or stainless filtration.
Both the proper pump selection and E85-compatible filtration are required to configure this fuel system for E85.
Included Components
- F-150 Mustang Dual Pump Module
- Billet fuel rails
- F1i Fuel Pressure Regulator configurable for static, manifold, or boost reference
- 88mm inline fuel filter
- Flow-through T-block for direct mounting on the HPFP inlet
- 30 feet of fuel line with choice of available line type
- 11 billet compression-style hose ends
- 5 straight hose ends
- 3 90-degree hose ends
- 2 45-degree hose ends
- 1 150-degree hose end
- 8 billet low-profile 90-degree AN-to-ORB swivel fittings
- 2 billet straight AN-to-ORB fittings
- 2 1.25" rail extensions
- 1 3/8 EFI female to ORB-10 male adapter
- 1 ORB-8 plug
- 10 hose straps with stainless mounting screws
- Fittings, hose, and hardware required for typical fuel line plumbing
Available Options and Upgrades
Electrical Options
- None: Base module configuration with approximately 6" of fuel pump power wire extending from the hermetic seal.
- FC2 Controller with 6-Gauge Wiring: Operates both pumps simultaneously using factory control. Best for two smaller street-duty pumps or two large pumps in track applications where increased fuel heat is less of a concern. Includes 14' of 6 AWG power wire, 100-amp fuse, 3' ground wire, 7' 12 AWG pump leads, and sealed Delphi connector.
- FC3 Staged Controller with 4-Gauge Wiring: Independently controls the secondary pump from the primary pump using factory control plus a secondary trigger. Recommended for large dual-pump street applications to help minimize fuel heat. Includes 14' of 4 AWG power wire, 100-amp fuse, 3' ground wire, 7' 12 AWG pump leads, and sealed Delphi connector.
- Delphi Connector / Pigtail Only: Includes a sealed Delphi connector and 7' of 12 AWG pump leads. Installer is responsible for properly configuring the required fuses and relays.
Filtration Media
- Cellulose: 10-micron nominal / 14-micron absolute disposable element with aluminum endcaps and Viton O-ring. For gasoline and race gas. Recommended for Injector Dynamics fuel injectors.
- Microglass SSD Anti-Static: 12-micron absolute disposable, static-dissipating element with aluminum endcaps and Viton O-ring. Compatible with gasoline, race gas, E85, E100, M5, diesel, and other fuel blends. Recommended for Injector Dynamics fuel injectors.
- Stainless: 10-micron nominal / 26-micron absolute reusable stainless element with stainless endcaps and Viton O-ring. Compatible with gasoline, race gas, E85, E100, M5, diesel, and other fuel blends.
Fuel Filter Upgrades
- 128mm Filter: Upgrades the standard 88mm filter to a larger 128mm filter for increased filtration capacity and longer service intervals.
- Billet Mounting Bracket: Provides a secure, show-quality underbody filter installation while keeping the filter accessible for maintenance.
- Filter Monitoring Gauge and Fitting: Monitors fuel pressure before the filter to help identify restriction. Increasing pre-filter pressure can indicate a clogged filter, which can reduce pump performance, shorten pump life, and increase fuel temperature. Includes a fitting for proper gauge orientation.
Additional System Options
- Honeywell Pressure Switch for FC3: 1/8" NPT male pressure switch designed for installation in the intake manifold. Must receive both boost and vacuum signals.
- Boost / Vacuum Manifold Kit: Includes Fore Innovations Boost / Vacuum Manifold, three 1/4" barb fittings, and four plugs.
Professional Installation and Custom Tuning Required
Professional installation and a custom tune are required for this fuel system to function properly. Qualified installers and tuners must understand the requirements of integrating a standalone high-performance fuel system with the vehicle.
Fore Innovations provides detailed assistance regarding the function of the components it supplies. However, Fore does not provide assistance with integration into the OE harness, ECU tuning, or elimination of alarm codes or Check Engine Lights (CELs).
Features
- Fore Innovations L1E Dual Pump Fuel System
- Part number 91-621E
- Designed for 2018-2026 Ford F-150 5.0L Coyote applications
- Supports approximately 800-900 RWHP with properly configured dual fuel pumps
- Fore recommends operating one pump full time and activating the secondary pump under load
- Supplies the High Pressure Fuel Pump and port injection system
- Can supply a small wet nitrous system when properly configured
- F1i regulator supports static, manifold-referenced, or boost-referenced operation
- Includes billet fuel rails for proper port injection supply with E85
- Retains OE fuel transfer functionality
- Retains OE fuel level sender functionality
- Retains OE EVAP functionality
- Includes upgraded feed and return lines
- Includes high-capacity filtration and check valve
- Includes flow-through T-block for direct mounting at the HPFP inlet
- Includes fittings, hose, and hardware for typical fuel line plumbing
- E85 capability available with required pump and filtration selections
- Professional installation and custom tuning required
Fitment
- 2018 Ford F-150 5.0L Coyote
- 2019 Ford F-150 5.0L Coyote
- 2020 Ford F-150 5.0L Coyote
- 2021 Ford F-150 5.0L Coyote
- 2022 Ford F-150 5.0L Coyote
- 2023 Ford F-150 5.0L Coyote
- 2024 Ford F-150 5.0L Coyote
- 2025 Ford F-150 5.0L Coyote
- 2026 Ford F-150 5.0L Coyote
Fitment Notes
- Designed for 2018-2026 Ford F-150 5.0L Coyote applications.
- Professional installation and custom tuning are required.
- E85 capability requires F90000267, F90000274, or F90000285 fuel pumps AND Microglass SSD or stainless filtration.
- Fuel pressure settings must follow the selected static, manifold-referenced, or boost-referenced configuration.
- For operation outside the specified L1E fuel pressure parameters, Fore Innovations recommends an L2 fuel system.
- Fore Innovations does not provide assistance with OE harness integration, ECU tuning, or elimination of alarm codes or CELs.
Fuel Pump Warranty:
We take great pride in our product line since we design, machine, assemble, and package our products entirely in house. We guarantee our products to be free of defects in materials and workmanship to the original purchaser. Due to the highly technical nature of our products, we recommend only experienced and competent individuals and shops install our products and systems.
We cannot accept returns on injectors or pumps that have been in contact with fuel.
Fore Innovations, LLC does not warranty any product that have been damaged or rendered defective as a result of accident, misuse, or abuse. Additionally, Fore Innovations is not responsible for special, incidental, or consequential damages or costs incurred due to the installation, use, or misuse of our products.
We will gladly refund any parts that are received in new resalable condition and accompanied with a Return Authorization Number to the original purchaser. Fore Innovations will not be responsible for any items sent to us without a Return Authorization Number.
TI Automotive (and Walbro) fuel pumps are sold only with TI Automotive’s warranty. Currently, TI Automotive does not have a warranty on their high performance parts. For more information:
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
