Click to zoom in
SKU: U-EF-PLUS
eFlexFuel eFlexPlus E85 Flex Fuel Conversion Kit Mercedes C63 AMG M156
The eFlexFuel eFlexPlus E85 Flex Fuel Kit is the best plug-and-play E85 conversion for Mercedes-Benz C63 AMG M156 owners wanting to run any blend of E85 and gasoline. This fully automatic system adjusts fueling in real-time via smartphone app, delivers increased power and cooler temps on E85, and installs without touching the factory ECU or triggering check engine lights.
Key Features
- Fully Automatic: No tuning or map switching, seamlessly runs E0 to E85 blends
- eFlexApp Control: Smartphone app for Eco/Dynamic/Sport modes, cold start adjustment, ethanol monitoring, and more
- Under-Hood Install: Clean installation preserves factory wiring and OBD functionality
- Performance Gains: More power, lower operating temperatures, and reduced emissions on E85
Specifications
| Specification | Detail |
|---|---|
| Part Number | U-EF-PLUS |
| Compatibility | Any Ethanol Blend E0-E85 |
| Control | Bluetooth eFlexApp (iOS/Android) |
| Installation | Under-Hood, No ECU Modification |
| Engine | 6.2L M156 V8 |
| Country of Origin | Finland |
| Warranty | 5-Year with Registration |
Product Notes
- Complete DIY kit, for high-power builds with upgraded injectors, consider eFlexPro for custom tuning
Installation Notes
- Estimated time: 2-4 hours, moderate difficulty, fuel line modification required
- Plug-and-play wiring with quick couplers, detailed instructions 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 advanced Bluetooth control
- Premium components for reliable E85 performance and power gains
- Extended 5-year warranty with registration and free support
Frequently Asked Questions
-
Q: Does this require tuning?
A: No, fully automatic, runs any blend without map changes or ECU flash. -
Q: Will it trigger a check engine light?
A: No, installs parallel to factory system without altering OEM data. -
Q: How much power gain on E85?
A: Significant increases in power and torque with cooler operating temps. -
Q: Is it reversible?
A: Yes, completely removable with no permanent modifications.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock, ships same or next business day
- Packaging: Official eFlexFuel retail box
Read More
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
Shop Cooling Components, Catch Cans, Pulleys & Engine Bay Accessories Browse premium engine parts and engine components at Black Ops Auto Works, including oil catch cans, pulleys, thermostats, radiator components, coolant accessories, engine covers, fuse box covers, cap covers, throttle bodies, cooling upgrades, and engine bay dress-up parts for trucks, SUVs, muscle cars, and performance vehicles. Whether you are maintaining a street build, upgrading a high-horsepower setup, or improving under-hood styling, this collection is built for customers searching for engine parts, engine bay accessories, cooling upgrades, catch cans, and performance engine components. Shop Top Engine Brands Find trusted brands across the engine category, including: Billet Technology Mishimoto ZPE GripTec MightyMouse Solutions Cordes Performance Granatelli Cometic BBK Corsa These brands are popular for oil catch cans, thermostat housings, engine bay accessories, radiator and coolant upgrades, superch...
View Engine Products
Flex Fuel Sensors
Welcome to our exclusive collection of Flex Fuel Sensors, where performance meets precision. Designed for optimal functionality, these sensors provide accurate readings for your vehicle's fuel system, ensuring that you can maximize efficiency and power while minimizing emissions. Our handpicked selection features only the most reliable and durable sensors, making it easy for you to find the perfect match for your automotive needs. Why Choose Our Flex Fuel Sensors? High Accuracy: Our sensors guarantee precise fuel mixture measurements, crucial for achieving peak engine performance. Durability: Each sensor in our collection is built to withstand harsh conditions, ensuring long-lasting service. Easy Installation: Designed for effortless integration with most vehicles, our Flex Fuel Sensors come with clear instructions. Improved Fuel Economy: By optimizing fuel use, our sensors help you save money at the pump while enhancing vehicle efficiency. Shop with Confidence Our Flex F...
View Flex Fuel Sensors Products
Fuel Delivery
Shop performance fuel delivery parts for street, race, diesel, and off-road builds at Black Ops Auto Works. Our Fuel Delivery collection includes fuel pumps, fuel filters, fuel rails, fuel pressure regulators, fuel pump hangers, surge tanks, flex fuel kits, carburetors, fuel tanks, and related fuel system components from trusted performance brands. Whether you are upgrading a daily driver, finishing a race build, or improving fuel system reliability on a high-horsepower setup, this collection is built to help you find the right parts fast. We carry fuel delivery solutions for a wide range of applications including import, domestic, diesel, and custom performance vehicles. Shop Fuel Delivery Parts by Category Fuel Pumps for high-flow and OE-replacement applications Fuel Filters for clean, reliable fuel flow Fuel Rails for improved fuel distribution Fuel Pressure Regulators for stable fuel pressure control Fuel Pump Hangers and install components Surge Tanks for high-perfo...
View Fuel Delivery Products