Saturday, February 15, 2025

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COBB Flex Fuel for Subaru VB WRX is HERE

Cobb Tuning – After more than a year of development time, the most highly anticipated performance upgrade for Subaru’s 2022+ WRX is here!  Today we are extremely excited to announce VB WRX Flex Fuel Tuning.  The power potential of E85 is no longer a secret, we’re here to make taking advantage of that potential a breeze.  Our CAN Gateway Flex Fuel components make adding over 50hp and 80tq to your WRX as easy as a visit to your nearest E85 pump.  Let your WRX’s FA24 EAT with COBB CAN Flex Fuel!

We do have limited availability of component quantities for launch. Components will be begin shipping on Tuesday, February 18th. We’re kicking off Customer pre-orders today as we will be shipping on a first come first serve basis come Tuesday.


New VB WRX Flex Fuel Parts & Packages

VB WRX Flex Fuel Ethanol Content Sensor

COBB CAN FLEX FUEL UPGRADE SUBARU WRX 2022-2024

The COBB CAN Gateway Flex Fuel Upgrade offers true plug-and-play installation and allows for seamless integration of flex fuel for the VB WRX.

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. The included 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 2022-2024 WRXs. It consists of a cable that runs into the cabin and utilizes our CAN adapter which allows integration to be a plug-and-play affair. Installation of this component requires removal of your car’s Radio/Cockpit Control Unit.

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 for VB WRX Flex Fuel

COBB CAN FUEL PRESSURE SENSOR KIT SUBARU WRX 2022-2024

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 is REQUIRED when using COBB Stage 1+ Flex Fuel OTS Maps.

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.

COBB STAGE 1 TO STAGE 1 + CAN FLEX FUEL POWER PACKAGE UPGRADE SUBARU WRX 2022-2024

Select this product if you already have our Stage 1 Package (Accessport and High Flow Filter) for your WRX.  These components upgrade to our new Stage 1 + CAN Flex Fuel Power Package to take advantage of .

Includes:

CAN Flex Fuel Upgrade

CAN Fuel Pressure Sensor Kit

VB WRX Flex Fuel Stage 1 Power Package

COBB STAGE 1 + CAN FLEX FUEL POWER PACKAGE SUBARU WRX 2022-2024

The Stage 1+ CAN Flex Fuel Power Package includes it all.  Dollar for dollar, this is the easiest and cheapest way to add over 50hp and 80tq to your otherwise stock WRX!

Includes:

Accessport V3

COBB High Flow Panel Filter

CAN Flex Fuel Upgrade

CAN Fuel Pressure Sensor Kit

E85 Refers to a fuel with 85% ethanol content, vs standard pump fuel (91,93 etc) which typically has a 10% ethanol content. Power output between 91 and 93 octane tunes will become the same as ethanol content goes above a certain point.

Installing the CAN Gateway, Ethanol Content Sensor, and Fuel Pressure Sensor is straight forward.  That said, it does include some steps that are a small departure from previous COBB Flex Fuel Kits.  In order to tap into the WRX’s CAN network the included Vehicle Harness must be run through the firewall and behind dashboard. Access the network at the OEM Gateway takes place behind the dash.  This is all possible in a plug-and-play fashion, but does require removing the factory radio/display.  The video above walks you through that process, full install support is available at the link below.


Off The Shelf Map Support & Power Gains

The best part of the COBB Accessport and using Stage Power Packages is that COBB Off The Shelf (OTS) Maps are included for FREE.  As long as your car’s modifications match the parts requirements you can have confidence that your car will perform safely and reliably at the increased power level.  For this release, we’re keeping it simple.  All new Stage1+Flex Fuel OTS Maps are available for download from cobbtuning.com/maps.  These maps are intended to be used on a car that is equipped with our Stage 1+ Flex Fuel Power Package outline above. The only choice you have to make is the appropriate base Octane level (91 or 93).

Stage1+FlexFuel 91 v311.ptm

Choose this map when your base fuel when NOT running E85 is 91 Octane (E10) pump fuel.

Stage1+FlexFuel 93 v311.ptm

Choose this map when your base fuel when NOT running E85 is 93 Octane (E10) pump fuel.

Stage1+FlexFuel Economy Mode v311.ptm

The Economy Mode map can be used with either 91 or 93 Octane as the base fuel type.

E85 Refers to a fuel with 85% ethanol content, vs standard pump fuel (91,93 etc) which typically has a 10% ethanol content. Power output between 91 and 93 octane tunes will become the same as ethanol content goes above a certain point.

Stage1 FF E83Stage1 FF E83 Values
Peak HP Increase19.2%322.0 hp @ 5800rpm vs 270.1 hp @ 5510rpm
Peak TQ Increase29.3%354.1 ft-lb @ 3290rpm vs 273.8 ft-lb @ 2920rpm
Max HP34.7%222.2 hp vs 165.9 hp @ 3340rpm
Max TQ35.5%353.8 ft-lb vs 261.1 ft-lb @ 3340rpm
Average HPStock 189.4 hpTuned 236.6 hp
Average TQStock 253.1 ft-lbTuned 308.0 ft-lb
AJ Grasso
AJ Grasso
25 years in the automotive industry with experience in Motorsports, Dealerships, Mechanic, Manufacturing, Wholesale, and Retail Shops. Irvine, CA