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Cobb CAN Flex Fuel Upgrade + Fuel Pressure Kit – 2018-2021 WRX

Cobb CAN Flex Fuel Upgrade + Fuel Pressure Kit – 2018-2021 WRX


This upgrade kit includes the Subaru CAN Flex Fuel Upgrade Kit (CAN Gateway Module with Harness / Bracket and Ethanol Sensor), and the CAN Fuel Pressure Sensor Kit for the Subaru WRX 6MT 2018-2021.

Select this product if you already have a COBB Stage 1+ or NexGen Stage 2 Package, and would like to add our new CAN Flex Fuel Kit.


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This product may not be available for local pick-up. Contact us for more details.


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The COBB CAN Gateway Flex Fuel Kit offers true plug-and-play installation and allows for seamless integration of flex fuel for supported vehicles.

CAN Gateway
The included COBB CAN Gateway provides the means for aftermarket sensor data to be injected into your car’s CAN system where it can be absorbed by the ECU and utilized in either a COBB Off The Shelf Map or custom calibration. The Gateway itself is constructed of billet aluminum encasing a precision manufactured PCB. A machined bracket allows for a straight-forward bolt-in installation on supported cars.

Vehicle Specific Harness.
Each CAN Gateway Kit includes a vehicle specific wiring harness. This specific kit is compatible with 2018-2021 WRXs and is NOT compatible with 2015-2017 WRXs. Please see our other CAN Gateway Kits for one that is compatible with your car.

CAN Ethanol Sensor Kit
The CAN Ethanol Sensor Kit includes an ethanol sensor with mounting bracket, fuel lines with quick connect fittings, and a wiring harness that connects to the CAN Gateway.

Fuel Pressure Sensor Kit

A plug and play solution when using the COBB CAN Gateway enabling users to monitor low side Fuel Pressure on a Custom Accessport monitor.

The Fuel Pressure Sensor Kit uses OEM quality connectors, making fit and finish second to none. Included in this kit is a 0-100psi Fuel Pressure Sensor, a bespoke quick-disconnect billet adapter, and a wiring harness that allows for plug-and-play installation with the COBB CAN Gateway.

*Note* – This kit is NOT compatible with 2015-2017 WRXs as they use a different wiring harness. 

Subaru CAN Flex Fuel Upgrade + Fuel Pressure Kit WRX 2018-2021

  • Ethanol Sensor Kit
  • CAN Gateway Module
  • CAN Gateway Bracket
  • CAN Gateway Harness
  • CAN Fuel Pressure Sensor Kit


This part is legal under the provisions of EPA’s Anti-Tampering Policy. COBB Tuning has established a reasonable basis (testing results) via SEMA Garage Emissions Certification that verifies that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and EPA’s Anti-Tampering Policy.


Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending. Once testing is complete with California, and an EO number is issued, this product will be updated to 50-state legal status.


  • 2018-2021 WRX