Subaru Ascent Flex Fuel Kit - COBB - Stg1 to Stg1+ CAN - `23-`25. Add CAN-integrated flex fuel capability to your 2023–2025 Ascent and move from a standard Stage 1 setup to Stage 1+ on ethanol blends with confidence.

This COBB-based package leverages CAN communication to deliver accurate ethanol content to the ECU, giving tuners predictable blending and consistent drivability. The kit is tailored for the Ascent and includes an ethanol content sensor, vehicle-specific harnessing, and the required hardware for a tidy, serviceable install. Real-time ethanol data enables dependable map strategies for mixes from pump gas to E blends.

Features

• CAN-integrated ethanol content reporting for 2023–2025 Subaru Ascent
• Supports the transition from Stage 1 to Stage 1+ with E-blends
• Ethanol content sensor with application-specific wiring
• Complete hardware designed for clean routing and serviceability
• Real-time data to support reliable tuning and logging

Have questions or want help planning your setup? Call our Austin, TX or Los Angeles, CA area shops—we offer professional installation and customization at both locations: 512-982-9393 (TX), 562-981-6800 (CA).

Purchasing multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov