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
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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

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