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Product Fitment:
2023-2025 Subaru Ascent
2023-2025 Subaru Legacy Sport / XT
2023-2025 Subaru Outback XT / Wilderness
Upgrade your existing COBB Stage 1 setup with the Subaru Stage 1 to Stage 1+ CAN Flex Fuel Power Package, designed for 2023–2025 Subaru Ascent, Outback XT/Wilderness, and Legacy XT/Sport models. This package allows you to seamlessly add flex fuel capability to your vehicle, unlocking adaptive performance based on ethanol content while maintaining factory-like drivability.
If you already own a COBB Stage 1 Power Package, this upgrade provides everything needed to transition to Stage 1+ CAN Flex Fuel tuning. The system integrates directly into the vehicle’s CAN network using COBB’s advanced CAN Gateway, making installation truly plug-and-play with no cutting or splicing required.
This package includes both the CAN Ethanol Content Sensor Kit and the CAN Fuel Pressure Sensor Kit, enabling accurate real-time monitoring of fuel composition and pressure. When paired with COBB Off-The-Shelf maps, the system automatically adjusts engine calibration for optimal power, efficiency, and safety when running pump gas, ethanol blends, or flex fuel.
This product is legal under EPA Anti-Tampering Policy provisions and has been verified by COBB Tuning to operate within federal emissions standards for on-street use in states that follow the Clean Air Act.
Not legal for sale or use in California on any emissions-controlled vehicle.
CARB testing for 50-state compliance is currently pending.
Stage 1 to Stage 1+ CAN Flex Fuel upgrade package
Designed for 2023–2025 Subaru Ascent, Outback XT/Wilderness, and Legacy XT/Sport
COBB CAN Gateway and mounting bracket included
CAN Ethanol Content Sensor Kit
CAN Fuel Pressure Sensor Kit
True plug-and-play installation
Supported by COBB Off-The-Shelf (OTS) maps
Enables adaptive tuning for ethanol and pump gas blends
Subaru owners who already have a COBB Stage 1 Power Package
Drivers looking to add flex fuel capability without complex wiring
Enthusiasts seeking increased performance with factory-level integration
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