COBB Stage 1 to Stage 1 + CAN Flex Fuel Power Package Upgrade - 2022+ Subaru WRX

Already running the COBB Stage 1 Power Package on your VB WRX and ready to step into ethanol blend tuning? This is the upgrade you’re looking for.

The COBB Stage 1 to Stage 1 + CAN Flex Fuel Power Package Upgrade is designed specifically for owners who already have Stage 1 (Accessport + High Flow Filter) and want to add CAN-based flex fuel capability. This kit includes the required CAN hardware to support flex fuel tuning, making the jump to ethanol blends (including E85 content) a clean, plug-in-friendly process when using supported COBB OTS maps.

Dyno Tuning Results

For Cobb Tunning's official map notes please click here.

Who This Is For

• You already own the COBB Stage 1 Power Package for your 2022–2026 WRX (VB).
• You want to add flex fuel tuning capability to safely account for varying ethanol content.
• You want the supporting CAN components to do it the right way.

What’s Included

• COBB CAN Gateway & Bracket
• COBB CAN Ethanol Content Sensor Kit
• COBB CAN Fuel Pressure Sensor Kit

Why We Like It

This upgrade keeps everything in the COBB ecosystem and is the most straightforward way to go from Stage 1 to Stage 1 + CAN Flex Fuel. If you’ve already invested in an Accessport and Stage 1 hardware, this is the logical next step to unlock ethanol’s potential with the right monitoring and support in place.

Flex Fuel Basics

Flex fuel tuning allows your calibration to account for changes in ethanol content. For reference: E10 refers to 10% ethanol content, while E83 refers to 83% ethanol content. Using the correct maps and hardware helps the car adapt appropriately to what’s actually in the tank.

Tuning Notes

• Supported by COBB Off The Shelf (OTS) Maps (use the correct map for your fuel and modification setup).
• This product is intended as an upgrade path for customers who already have the Stage 1 package.

Emissions Information

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

California: NOT LEGAL for sale or use in California on any emissions controlled motor vehicle. CARB testing for 50-state compliance is pending. Once testing is complete and an EO number is issued, the product will be updated to 50-state legal status.

Key Features

• Upgrade from COBB Stage 1 to Stage 1 + CAN Flex Fuel for VB WRX
• Includes CAN ethanol content sensing and fuel pressure sensor support
• Designed for 2022–2026 WRX (VB) MT/CVT
• Plug-and-play style integration using COBB CAN components
• Supported by COBB OTS maps

Installation Notes

• Intended for vehicles already equipped with the COBB Stage 1 package (Accessport + filter).
• Follow COBB’s installation guide and verify all connections before flashing a flex fuel calibration.
• Use only supported maps and configurations for your fuel and modification setup.

What’s in the Box

• COBB CAN Gateway & Bracket
• COBB CAN Ethanol Content Sensor Kit
• COBB CAN Fuel Pressure Sensor Kit
• Included instructions/documentation (per COBB kit contents)

Compatibility & Disclaimers

For 2022–2026 Subaru WRX (VB) MT/CVT only. This kit is an upgrade for customers who already own the COBB Stage 1 package. Emissions legality varies by location—always verify local regulations and confirm the latest COBB documentation for map requirements, supported fuels, and hardware configurations.