SKU: B343650 | UPC: 731946518914
COBB CAN Flex Fuel Upgrade Kit – 2015-2021 Subaru WRX (FA20DIT)
The COBB 343650 CAN Flex Fuel Kit delivers precise ethanol content and fuel temperature data straight to your Accessport V3 on 2015-2021 Subaru WRX models with FA20DIT engines. This plug-and-play system unlocks full E85 capability with automatic blending and cold-start adjustments for reliable power gains. Install inline on fuel feed or return line for seamless integration without cutting wires.
Key Features
- True CAN Bus Integration: Direct digital connection to Accessport V3 ensures 100% accurate real-time data, no analog conversions or signal loss.
- Continental Ethanol Sensor: OEM-level sensor measures 0-100% ethanol content plus fuel temperature with proven durability for daily driving or track use.
- Live Data Display: Monitor ethanol percentage and fuel temp instantly on Accessport screen for informed tuning decisions.
- Full E85 Compatibility: Supports automatic fuel map switching and cold-start compensation using COBB’s free OTS Flex Fuel maps.
- Complete Kit: Includes harness, CNC aluminum firewall bracket, -6 AN fittings, and all hardware for clean, professional results.
Product Notes
- Requires Accessport V3 with latest firmware; fits all 2015-2021 WRX FA20DIT engines.
- Does not fit STI models (use COBB 325650) or 2022+ VB WRX chassis.
- Made in USA with lifetime warranty against defects.
Installation Notes
- 60-90 minute DIY install on fuel feed or return line; no cutting factory wiring.
- Accessport auto-detects kit post-install; flash Flex Fuel map to activate.
- Secure sensor with included CNC aluminum firewall bracket for vibration resistance.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2015-2021 | Subaru | WRX | Base/Premium/Limited |
Why Choose COBB Tuning?
- #1 in Subaru performance tuning for 20+ years with millions of Accessports sold.
- Engineered and built in USA for exact FA20DIT fitment and 500-800+ hp builds.
- Proven reliability on drag strips, road courses, and street cars worldwide.
Frequently Asked Questions
- Q: Does this fit 2018 STI?
A: No, STI requires COBB 325650 Flex Fuel Kit; this is WRX FA20DIT only. - Q: Do I need a custom tune?
A: No, use COBB’s free Off-The-Shelf Flex Fuel maps via Accessport. - Q: How long is warranty and install time?
A: Lifetime against defects; 60-90 minutes plug-and-play with no wire cuts.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Official COBB retail box, 10″ x 8″ x 4″
- Weight: 1.65 lbs
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