eFlexFuel E85 Kits

Shop eFlexFuel E85 conversion kits, including eFlexPlus and eFlexPro systems, at Black Ops Auto Works. Explore flex-fuel conversion options for supported gasoline-powered vehicles and engine configurations. This collection includes application-specific packages for select Dodge, Jeep, RAM, Chrysler, Ford, GM, Nissan, Toyota, and Mercedes-Benz vehicles. Choose by complete engine and fuel-system compatibility, not vehicle brand or fuel-line diameter alone.

eFlexFuel E85 Flex-Fuel Conversion Systems

Compatible eFlexFuel systems use measured ethanol content to adjust fueling as the blend in the fuel system changes. This allows supported vehicles to operate on gasoline, E85, or mixtures within the system’s approved range after correct installation and compatibility verification.

A conversion kit is more than an ethanol-content display. It must work with the vehicle’s injection system and have sufficient fuel delivery available for the intended ethanol blend. Confirm the engine, injectors, pump, fuel lines, and existing modifications before selecting a kit.

eFlexPlus Conversion Kits

Explore eFlexPlus packages for supported vehicle applications, including listings with different fuel-line connection sizes and harness configurations. Select the exact package specified for your engine and fuel system rather than assuming all Plus Series kits are interchangeable.

Available monitoring and adjustment features depend on the control-unit version and compatible software. Verify the supplied hardware generation and its documentation. Features advertised for newer eFlexPlus variants should not automatically be assumed to apply to every kit in this collection.

eFlexPro Conversion Kits

eFlexPro packages provide additional tuning and monitoring capabilities for supported configurations. Manufacturer-supported features include eFlexTuner integration and, on compatible hardware, connections for external sensor information such as a wideband air-fuel measurement system.

Check the exact kit’s supported inputs, software requirements, and included components before planning custom adjustments. An advanced controller does not replace verification of fuel-system capacity or make every modified engine compatible. Existing engine tuning and aftermarket fuel components should be reviewed as part of the complete installation.

Vehicle, Harness, and Fuel-Line Compatibility

This collection includes kits listed with 8 mm and 10 mm fuel-line connections, along with dedicated Mercedes-Benz C 63 AMG packages. Those connection sizes are installation details, not a complete fitment specification. Vehicles within a broad year range can use different engines, injector connectors, and fuel-system layouts.

Confirm the exact year, model, engine code, injection type, injector connectors, and fuel-line fittings. Do not assume a kit supports direct injection, port injection, or a combination of both unless the manufacturer verifies that specific configuration. Report engine swaps, injector changes, forced induction, and existing calibration changes before ordering.

Installation and Fuel-System Planning

Review the contents of the selected package, including the control unit, harness, ethanol sensor, fuel connections, and installation accessories. Confirm which components are supplied and which must be purchased separately. Use the instructions for the exact kit version rather than a generic flex-fuel installation guide.

Professional installation is recommended because the work involves fuel plumbing and electrical connections. Before operation, verify secure connections, leak-free plumbing, wiring clearance, and correct system function. Browse our fuel delivery components when evaluating any supporting parts required for the approved combination.

Choose Your Part

• Confirm the exact vehicle, engine, and fuel-injection configuration.
• Verify manufacturer approval for the application and any modifications.
• Match injector connectors, harness configuration, and fuel-line fittings.
• Check fuel-pump and injector capacity for the intended ethanol blend.
• Confirm eFlexPlus or eFlexPro hardware generation and supported features.
• Review included components, software compatibility, and installation requirements.
• Check applicable emissions requirements and product documentation for your location.

Frequently Asked Questions

Can I use gasoline after installing an eFlexFuel kit?

A compatible, correctly installed system is designed to accommodate gasoline and supported ethanol blends by adjusting fueling. Follow the operating instructions for the exact kit and the manufacturer-approved vehicle configuration.

What is the difference between eFlexPlus and eFlexPro?

The product lines differ in their supported tuning, monitoring, and sensor capabilities. Compare the specific hardware version and feature list. Do not assume every Plus or Pro kit includes the same functions as the newest generation.

Is fuel-line diameter enough to choose the correct kit?

No. Fuel-line diameter is only one requirement. Engine compatibility, injection type, harness connections, fuel-system capacity, and existing modifications must also match the selected package.

Will an eFlexFuel kit guarantee more horsepower?

No fixed gain should be assumed. Results depend on the engine, ethanol blend, calibration, and available fuel delivery. A conversion system’s compatibility and operating requirements should be established before evaluating performance expectations.

Does a conversion kit replace upgraded injectors or a fuel pump?

Not when additional fuel capacity is required. The controller cannot increase the physical capacity of an injector or pump. Have the existing system evaluated for the intended ethanol blend and engine configuration before conversion.

Shop eFlexFuel at Black Ops Auto Works

Compare eFlexPlus and eFlexPro conversion kits for your supported application. Match the package to the complete vehicle and fuel-system configuration, then confirm the hardware, installation requirements, and operating instructions before purchase. Accurate compatibility is the foundation of a properly planned flex-fuel conversion.