Hondata CANFlex Flex Fuel Kit for FK8 Civic Type R

Hondata CANFlex Flex Fuel Kit for 2017–2021 Honda Civic Type R (FK8)

Unlock the full performance potential of your Honda Civic Type R (FK8) with the Hondata CANFlex Flex Fuel Kit — the ultimate flex fuel solution engineered to deliver unmatched power, torque, and throttle response. This system allows your turbocharged 2.0-liter K20C1 engine to safely and efficiently run on E85, pump gas, or any ethanol blend in between, automatically adjusting fuel and ignition maps for optimal performance and drivability. With Hondata CANFlex, you can experience dramatic horsepower gains and earlier turbo spool without compromising reliability or daily usability.

Designed and manufactured by Hondata, the CANFlex system integrates seamlessly with the factory ECU and FlashPro Manager software (version 4.3.3 beta or later). Each calibration is expertly developed for stock FK8 Civic Type R models equipped with the factory intake and exhaust system, providing smooth power delivery and a consistent torque curve across the rev range. Whether you’re commuting or carving corners, CANFlex transforms your Type R into a more responsive and exhilarating machine.

Key Features

• Compatible with 2017–2021 Honda Civic Type R (FK8)
• Enables use of E85, pump gas, or any ethanol blend
• 49-state legal (SEMA Certified) and emissions compliant
• Delivers up to +28 horsepower on stock setup
• Produces up to +71 horsepower with Hondata Fuel System
• Improves turbo spool by 200–400 RPM
• Enhances throttle response and midrange torque
• Integrates directly with Hondata FlashPro Manager software
• Includes all necessary components for installation

Performance Benefits

Hondata CANFlex doesn’t just add horsepower — it redefines how your Civic Type R drives. With a flatter torque curve, the car becomes more predictable, balanced, and engaging to drive. The E85’s 100–105 octane rating acts as an in-cylinder intercooler, helping reduce knock and allowing for higher boost and ignition advance. Drivers can expect earlier turbo response, increased torque throughout the powerband, and improved high-RPM pull. Simply fill up with pump gas, E85, or any blend in between — CANFlex automatically adapts to maximize power output and efficiency.

What’s in the Box

• Fuel line adapter with integrated ethanol content sensor
• E/B/CAN converter box (Ethanol–Bridge–CAN)
• E/B/CAN Hondata OBD2 adapter cable
• OBD II adapter
• Installation instructions

Software Requirements

Requires Hondata FlashPro Manager v4.3.3 beta or later for calibration loading and flex fuel monitoring.

Optional Upgrade

Pair the CANFlex system with a Hondata Fuel System to unlock even more potential. With the upgraded fuel system, calibrations can safely produce up to 400 horsepower and 400 lb-ft of torque on E85, while maintaining excellent drivability and safety margins. Experienced tuners can extract additional gains on built engines for track or competition applications.

Advantages

• More power than any bolt-on modification (+28 HP stock / +71 HP with fuel system)
• Lower cost per octane compared to premium gasoline
• 49-state legal – passes all smog tests
• Acts as an in-cylinder intercooler for cooler combustion and higher efficiency
• Flexible fueling – use pump gas, E85, or any blend

Experience a new level of performance and flexibility with the Hondata CANFlex Flex Fuel Kit for your FK8 Civic Type R. Whether you’re chasing faster lap times, improved throttle response, or more efficient daily driving, CANFlex delivers consistent, reliable power gains while maintaining OEM-level drivability and emissions compliance.