Subaru Flex Fuel
Our History With Subaru Vehicles
At COBB Tuning, we’ve built a legacy around enhancing Subaru vehicles, starting back in the early 2000s with our revolutionary Accessport tuning device. This device transformed the tuning landscape, allowing Subaru enthusiasts to easily optimize their vehicle’s performance with user-friendly software. Initially, we focused on the Subaru WRX and WRX STI, providing substantial power gains and improved drivability, quickly earning a dedicated following.
As our reputation grew, so did our product offerings. We developed a comprehensive range of performance parts specifically for Subaru, including turbo kits, exhaust systems, intake systems, and suspension components, all designed to work seamlessly with the Accessport. This integrated approach ensured that every aspect of performance could be enhanced, from power output to handling.
Today, we remain at the forefront of Subaru performance tuning, constantly updating our products and tuning maps to support the latest models. Our dedication to quality and customer satisfaction is reflected in our extensive support network and continuous product development. At COBB Tuning, our history with Subaru is one of innovation, performance, and a steadfast commitment to the enthusiast community. For more details, you can visit COBB Tuning’s Subaru section.
Flex Fuel Upgrade & Tuning for Subaru
Our Flex Fuel solutions for the Subaru vary depending on the vehicle and engine. Our offerings for the 2008-2021 STI models are based on our NexGen Flex Fuel implementation which is a result of multiple iterations, each advancing their technology and innovation. While for the 2015-2021 WRX are built around our innovative CAN Gateway system. Each Flex Fuel Kit for Subaru includes an ethanol content sensor and integrates seamlessly with the vehicle’s advanced electronics, enabling it to run efficiently on various ethanol blends, including E85. These kits works in conjunction with our Accessport tuning device, allowing real-time monitoring and adjustment of fuel and ignition parameters to optimize performance based on ethanol content.
Best of all, these packages and associated map files have all passed emissions testing at SEMA Garage and carry a SEMA Certification.
Click here for Map Notes (Dyno charts, power gains).
2022-2025 Subaru WRX Flex Fuel
Flex Fuel Stage Packages & Products for VB WRX Models USDM / ADM
After more than a year of development time, the most highly anticipated performance upgrade for Subaru’s 2022+ WRX is now here for both USDM and ADM Markets! We are extremely excited to announce VB WRX Flex Fuel Tuning, true flex fuel tuning for your 2022-2025 Subaru WRX. 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!
Read more on our 22-25 WRX Flex Fuel Blog Post.
2015-2021 Subaru WRX CAN Flex Fuel Packages
CAN Flex Fuel Stage Packages for VA WRX Models
Our Staged Power Packages that incorporate the CAN Flex Fuel system allow you to take your 2015-2021 Subaru WRX from stock to a completely different vehicle! With those parts installed, you’ll unlock your car’s hidden potential and have more horsepower, torque, and smoother drivability at your disposal on a moment’s notice. Our packages give you the ultimate way to customize your ride with multiple color options for intercoolers as well as your choice of intake, aluminum or the drool-worthy redline carbon fiber.
Read more on our 15-21 Subaru WRX Flex Fuel Blog Post.
2015-2021 Subaru WRX Flex Fuel Kits
Flex Fuel Upgrades for VA WRX Models
Our CAN Flex Fuel and Fuel Pressure kits for the 2015-2021 Subaru WRX deliver cutting-edge performance enhancements. The CAN Flex Fuel kit includes an ethanol content sensor and seamlessly integrates with the Accessport for dynamic fuel adjustment, enabling smooth transitions between E85 and gasoline. The Fuel Pressure kit features precise fuel delivery management to ensure optimal engine performance and reliability. Both kits are designed for robust performance, easy installation, and significant power gains, providing a comprehensive upgrade for your WRX.
Read more on our 15-21 Subaru WRX Flex Fuel Blog Post.
2008-2014 Subaru WRX CAN Flex Fuel
Flex Fuel Stage Packages & Components for the WRX Models
Take your 2008-2014 Subaru WRX to the next level with our complete stage packages + flex fuel offerings. We take the guesswork out of modifying your WRX by developing and testing our components for thousands of miles to create the most efficient and safest mod path out for your vehicle. With these packages, you can go from completely stock to well beyond that running any mixture of pump gas and ethanol, giving your car a substantial boost in horsepower and torque with power delivery and driving characteristics being smoothed out thanks to our COBB Tuning Accessport and calibrations.
Read more on our 08-14 Subaru WRX Flex Fuel Blog Post.
2015-2021 Subaru STI Flex Fuel Packages
Flex Fuel Stage Packages for the VA STI Models
Take your 2015-2021 Subaru STI to the next level with our complete stage packages + flex fuel offerings. We take the guesswork out of modifying your STI by developing and testing our components for thousands of miles to create the most efficient and safest mod path out for your vehicle. With these packages, you can go from completely stock to well beyond that running any mixture of pump gas and ethanol, giving your car a substantial boost in horsepower and torque with power delivery and driving characteristics being smoothed out thanks to our COBB Tuning Accessport and calibrations.
Read more on our 08-21 Subaru STI Flex Fuel Blog Post.
2015-2021 Subaru STI Flex Fuel Kits
Flex Fuel Upgrades for VA STI Models
Using our revolutionary NexGen Flex Fuel kits, running ethanol and tuning for your vehicle’s maximum performance and safety has never been easier. These kits compound on our innovative reverse engineering allowing you to take full advantage without sacrificing any factory sensors or components. Gone are the days of having to measure fuel at the pump and do a clumsy calculation to figure out a final ethanol percentage resulting in the tune being “close enough”. With the COBB NexGen Flex Fuel, just pump the fuel and let the ECU and COBB custom code do the work!
Read more on our 08-21 Subaru STI Flex Fuel Blog Post.
2015-2021 Subaru STI Fueling Upgrades
Fueling Components for 2015-2021 STI Models
For 2015-2021 Subaru STI models, upgrading the fueling system is critical for running flex fuel efficiently. Ethanol blends like E85 necessitate precise fuel delivery and pressure management to maximize performance and ensure engine safety. These enhancements not only boost power but also improve reliability and drivability, making them indispensable for flex fuel conversions. COBB’s Flex Fuel Kits are designed to meet these demands, featuring high-flow fuel pumps and injectors that handle the increased fuel requirements.
2008-2014 Subaru STI Flex Fuel Packages
Flex Fuel Stage Packages for the GR/GV STI Models
Upgrading your 2008-2014 Subaru STI with COBB’s Power Packages is incredibly straightforward and user-friendly. Our packages are designed for seamless integration, featuring a combination of the Accessport tuning device, high-flow intake systems, and performance exhausts. Each component is engineered for easy installation, often requiring basic hand tools and minimal mechanical knowledge. With comprehensive installation guides and top-notch customer support, transforming your STI’s performance is both simple and rewarding, allowing you to experience significant power gains and improved drivability in no time.
Read more on our 08-21 Subaru STI Flex Fuel Blog Post.
2008-2014 Subaru STI Fueling Upgrades
Fueling Upgrades for GR/GV STI Models
When adding flex fuel functionality to your 2008-2014 Subaru STI, it is essential to upgrade the fueling components in order to provide max power safely. Ethanol blends like E85 demand precise fuel delivery and pressure management to ensure optimal performance and engine safety. COBB’s Flex Fuel Kits come with high-flow fuel pumps and injectors, specifically designed to handle these increased fuel requirements. These upgrades not only boost power output but also enhance reliability and drivability, making them critical for any flex fuel conversion.
Read more on our 08-21 Subaru STI Flex Fuel Blog Post.
2023-2025 Subaru Ascent / Outback XT / Wilderness / Legacy XT / Sport Flex Fuel
Flex Fuel Stage Packages & Products for Ascent / Outback XT / Wilderness / Legacy XT / Sport 2023-2025
The COBB CAN Gateway Flex Fuel Upgrade offers true plug-and-play installation and allows for seamless integration of flex fuel for the Ascent / Outback XT / Wilderness / Legacy XT / Sport 2023-2025. The Stage 1+ CAN Flex Fuel Power Package includes it all. 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 55hp and 65tq to your Ascent as easy as a visit to your nearest E85 pump.
Read more on our Ascent / Outback Flex Fuel Blog Post.