SKU: 4501-RA002 | UPC: 4957266547014
HKS Standard Fuel Cut Defender for 2004-2021 Subaru Impreza WRX STI
The HKS Standard Fuel Cut Defender is a plug-and-play inline module that blocks the ECU fuel cut signal triggered by high boost pressure or RPM on Subaru Impreza WRX STI models from 2004 to 2021. It installs between the accelerator pedal position sensor and ECU to maintain full fuel delivery and throttle response during aggressive driving. Drivers gain reliable power output for tuned turbo setups without ECU reprogramming.
Key Features
- Fuel Cut Elimination: Intercepts and delays ECU signal to prevent fuel shutoff above stock limits ensuring consistent power in high-boost conditions
- Plug-and-Play Wiring: Direct connector fit to accelerator pedal sensor with no wire cutting or soldering required for quick setup
- Compact Design: Measures 65mm x 38mm x 25mm weighs 70g for discreet mounting under the hood
- Drive-by-Wire Compatible: Works seamlessly with electronic throttle systems on STI models preserving factory drivability
- Reliable Circuitry: Built with high-grade components to handle 12V systems and extreme track conditions without failure
Product Notes
- Pair with professional tuning to safely increase boost beyond stock parameters
- Retain for street and track use maintains emissions compliance where applicable
- Store in dry conditions to protect electronics from moisture
Installation Notes
- Professional installation recommended.
- Locate accelerator pedal position sensor under dashboard unplug factory harness plug in module reconnect
- Secure with included zip ties compatible with all STI factory wiring harnesses
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2007 | Subaru | Impreza WRX | STI |
| 2008-2014 | Subaru | Impreza WRX | STI |
| 2015-2021 | Subaru | WRX | STI |
Why Choose HKS?
- 50+ years developing turbo systems for JDM performance vehicles
- Components proven in Super GT and rally racing applications
- Engineered and assembled in Japan for exact ECU signal handling
Frequently Asked Questions
- Q: Does this fit my 2015+ STI?
A: Yes it connects directly to the APP sensor on all 2004-2021 USDM WRX STI models including hatchback and sedan variants - Q: Is wiring modification needed?
A: No plug-and-play design uses OEM connectors installation takes under 30 minutes with basic tools - Q: What warranty coverage applies?
A: Covered under HKS limited manufacturer warranty for defects in materials and workmanship contact seller for claim process
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Original HKS box 5.9 x 4.3 x 1.8 inches
- Weight: 0.22 lbs
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