eFlexPro upgraded control unit with analog inputs for Mercedes C63 AMG
eFlexTuner Windows software interface showing 3D fuel maps for custom tuning
eFlexFuel quick connect fuel lines and components for C63 AMG installation
Click to zoom in

Mercedes-Benz C 63 AMG E85 Flex Fuel Kits-EflexPro

eFlexFuel
U-EF-PRO2
Flex Fuel Sensor
Ships In 3-5 Business Days
$ 999.00
$ 999.00

SKU: U-EF-PRO2


eFlexFuel eFlexPro 2 E85 Flex Fuel Conversion Kit Mercedes C63 AMG M156

The eFlexFuel eFlexPro 2 E85 Flex Fuel Kit is the best advanced E85 conversion for Mercedes-Benz C63 AMG M156 owners wanting maximum power gains with full custom tuning. This pro-level system features patent-pending virtual load sensor, two analog inputs, wideband support, and 3D fuel mapping via eFlexTuner software for precise ethanol optimization while maintaining all OEM safety features.

Key Features

  • Full Custom Tuning: 3D fuel maps and wideband integration for safe, detailed E85 AFR optimization
  • Virtual Load Sensor: Patent-pending technology eliminates need for external load sensor tap
  • Analog Inputs: Connect two 0-5V sensors for advanced monitoring and control
  • eFlexApp & Tuner: Smartphone app for real-time data plus Windows software for in-depth tuning

Specifications

Specification Detail
Part Number U-EF-PRO2
Compatibility Any Ethanol Blend E0-E85
Control Bluetooth eFlexApp + eFlexTuner Software
Inputs 2x 0-5V Analog + Wideband Support
Installation Under-Hood with Fuel Line Mods
Engine 6.2L M156 V8
Country of Origin Finland
Warranty 5-Year with Registration

Product Notes

  • Pro series for high-power or modified builds – includes upgraded harness and control unit

Installation Notes

  • Estimated time: 2-4 hours (pro) / 4-6 hours (DIY), moderate to advanced difficulty
  • Fuel line modification required, detailed instructions and support included

This Part Fits

Year Make Model Notes
2008-2014 Mercedes-Benz C63 AMG 6.2L M156 V8

Why Choose eFlexFuel?

  • Finnish-engineered leader in flex fuel conversion with patented advanced tuning technology
  • Premium components and software for maximum power gains and engine protection
  • Extended 5-year warranty with registration and free product support

Frequently Asked Questions

  • Q: Does this require ECU flash?
    A: No, installs parallel to factory system – all OEM safety features remain active.
  • Q: Can I use my wideband?
    A: Yes, direct connection for real-time AFR tuning via eFlexTuner software.
  • Q: How much power gain?
    A: Significant increases on E85 – custom tuning maximizes output safely.
  • Q: Is it reversible?
    A: Yes, completely removable with no permanent changes.

Shipping & Handling

  • Method: UPS/FedEx Ground
  • Availability: In stock, ships same or next business day
  • Packaging: Official eFlexFuel retail box

Request For Information

Have questions about ? Fill out the form below and we'll get back to you by the next business day.
eFlexFuel

eFlexFuel

The eFlexFuel collection features cutting-edge products designed to enhance your vehicle's fuel efficiency and performance. Our innovative eFlexFuel kit operates by processing fuel injection signals from your car’s electronic control module (ECM), ensuring that each fuel injector is individually optimized for superior flow. Key Features of eFlexFuel Independent control of each fuel injector for customized performance. Easy installation with all necessary electrical and fuel line connectors included. No adjustments needed post-installation, making it a hassle-free upgrade for your vehicle. Experience the benefits of adapting seamlessly to various fuel injection systems with the eFlexFuel collection. Transform your vehicle's performance today!

View eFlexFuel Products
Engine

Engine

This engine parts collection covers oil catch cans, thermostats, thermostat housings, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, supercharger pulleys, idler pulleys, tensioner pulleys, and engine bay dress-up parts for trucks, SUVs, muscle cars, boosted builds, high-horsepower street cars, and performance vehicles that need better reliability, cooling, airflow, oil control, and under-hood styling. The collection is particularly strong for Dodge Challenger, Charger, Durango, Jeep Grand Cherokee Trackhawk, and Ram TRX platforms running 6.2L Hellcat, 6.4L HEMI, and 5.7L HEMI engines, where oil catch can and cooling upgrades address known OEM weaknesses in the PCV and thermal management systems. Import performance platforms including GM LS-based builds, Chevrolet Camaro, and Corvette applications are also represented through Mishimoto, CSF, and ZPE GripTec product lines. Builders who invest in engine bay organization and reliab...

View Engine Products
Flex Fuel Sensors

Flex Fuel Sensors

Flex fuel ethanol content sensors are the critical measurement device in any flex fuel conversion, reading the ethanol percentage in the fuel flowing through the line in real time and providing a signal to the engine management system that allows dynamic adjustment of injection duration, ignition timing, and boost targets as fuel composition changes from pure gasoline through any E85 blend. The most common sensor type used in performance flex fuel conversions is the Continental or Delphi inline sensor, which measures ethanol content through a frequency output signal that rises from approximately 50 Hz for pure gasoline to approximately 150 Hz for pure ethanol, providing a linear and accurate signal across the full blend range. Aftermarket sensor kits from Zeitronix, Turner Motorsport, and ID Motorsports bundle the sensor with pre-terminated wiring harnesses and installation instructions for specific platforms, while standalone sensors allow custom integration into fabricated fuel sy...

View Flex Fuel Sensors Products
Fuel Delivery

Fuel Delivery

A properly designed fuel delivery system is the backbone of any high-performance engine build, ensuring the injectors or carburetor receive a consistent supply of fuel at the correct pressure regardless of engine load, RPM, or fuel demand. From factory replacement pumps keeping daily drivers on the road to high-flow in-tank modules supporting 1000-horsepower builds, the right fuel delivery components prevent lean conditions, injector damage, and fuel starvation at the worst possible moment. Modern EFI systems are particularly sensitive to fuel pressure variation, with even small drops causing misfires and power loss under hard acceleration. Whether you are restoring a factory system or engineering a purpose-built race setup, matching pump flow rate and fuel pressure regulation to your injector and engine requirements is essential. Popular Upgrades Top-selling fuel delivery components include Aeromotive Phantom in-tank fuel pump kits that retrofit into factory tanks without custom fa...

View Fuel Delivery Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×