Hondata CANFlex Flex Fuel Kit for 2016-2021 Honda Civic Si 1.5T

Hondata CANFlex Flex Fuel Kit – 10th Gen Civic 1.5L (2016–2021 Si/EX/Sport)

Unleash hidden power with the Hondata CANFlex Flex Fuel Kit for the 10th Gen Honda Civic Si, EX, and Sport (2016–2021). Whether you're running pump gas or E85, CANFlex delivers maximum performance gains—safely and reliably.

• Gain up to 70–90 HP over stock with E85
• 49-state legal – passes all smog tests (SEMA certified)
• Run pump gas, E85, or any blend – the choice is yours
• Improved throttle response and turbo spool (200–400rpm earlier)
• Flat, torque-rich power curve for daily driving fun

This Torque Talk video explains the basics. 

What’s Included

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

Software Required

FlashPro Manager version 4.4.2 beta or later

Hardware Required

Hondata FlashPro

More Power. More Flexibility.

The CANFlex kit includes calibrations for stock vehicles that add up to 360 HP and 350 lb-ft of torque. Want even more? A pro tuner can dial in extra performance for built engines.

Whether you’re hitting the track, commuting, or showing off at a car meet, CANFlex gives you the confidence and power you crave—on any fuel.

Vehicle Combability

• 2016–2021 Honda Civic Si 1.5L Turbo
• 2016–2021 Honda Civic EX 1.5L Turbo
• 2016–2021 Honda Civic Sport 1.5L Turbo

Note: Slightly reduced MPG when using E85. Not compatible with 2.0L Civic models.

ALL SALES ARE FINAL. No returns or exchanges will be accepted.