Fuel Injector Clinic 1000cc Fuel Injector Set - High Z (is176-1000h) - 2004-2006 Subaru STI / 2005-2006 Legacy GT
Upgrade the fuel system on your top-feed-converted 2004-2006 Subaru STI or 2005-2006 Legacy GT with the Fuel Injector Clinic is176-1000h 1000cc High-Z fuel injector set. This four-injector package uses saturated, high-impedance Ball & Seat injectors engineered for excellent linearity, precise short pulse width control, and consistent fuel delivery. Fuel Injector Clinic's proprietary Data Match Technology provides the injector-to-injector consistency tuners need to build a clean, predictable calibration for modified turbocharged Subaru applications.
Important fitment note: The is176-1000h injector set only fits the original tumblers when used with the FIC RL STi top-feed fuel rail conversion. Verify that your STI or Legacy GT has the required FIC top-feed conversion before ordering.
Each injector is individually serial numbered and precisely matched, with detailed flow matching and latency information supplied on the included Data Match Sheet. FIC flow tests and rates these injectors at 43.5 PSI (3 Bar) with fuel at 90 degrees F using CF-16B calibration fluid. PGTUSC4 solder-in pigtails are included, while optional PADPUtoD4 plug-and-play adapters allow connection to the factory harness without cutting or soldering.
Specifications
- Manufacturer: Fuel Injector Clinic
- Part Number: is176-1000h
- Flow Rate: 1000cc/min
- Injector Quantity: 4
- Injector Type: Saturated / high impedance Ball & Seat
- Impedance: High-Z / high impedance
- Matching: Fuel Injector Clinic Data Match Technology
- Flow Test Pressure: 43.5 PSI (3 Bar)
- Flow Test Fuel Temperature: 90 degrees F
- Calibration Fluid: CF-16B
- Included Pigtails: PGTUSC4
- Optional Plug-and-Play Adapters: PADPUtoD4
- O-Rings: Included as required for the listed application
- Required Fuel Rail Conversion: FIC RL STi top-feed fuel rail conversion
- Warranty: Lifetime warranty against failure caused by defects in original manufacture
Features
- Complete set of four 1000cc/min performance fuel injectors
- Saturated, high-impedance Ball & Seat injector design
- Fuel Injector Clinic proprietary Data Match Technology
- Each injector is individually serial numbered
- Included Data Match Sheet provides detailed flow matching and latency information
- Excellent linearity and short pulse width control
- Precise matching helps support predictable ECU calibration
- Designed to provide strong drivability in properly tuned performance applications
- Flow tested and rated at 43.5 PSI (3 Bar)
- Testing performed with fuel at 90 degrees F using CF-16B calibration fluid
- Includes PGTUSC4 solder-in pigtails
- Optional PADPUtoD4 adapters provide plug-and-play connection to the stock harness
- Includes O-rings required for the listed application
- Uses brand-new, unused injectors rather than remanufactured or core-program injectors
- Lifetime warranty against failure caused by defects in original manufacture
1000cc Performance With Precise Fuel Control
The is176-1000h gives modified STI and Legacy GT builds additional fuel capacity while retaining the control required for good street manners and accurate tuning. Superior short pulse width control helps the ECU meter fuel accurately during idle and part-throttle operation, while the 1000cc/min flow capacity supports the increased fuel demand of higher-performance combinations.
For tuners, consistent injector behavior is every bit as important as outright flow capacity. Fuel Injector Clinic combines tight injector matching with detailed characterization data to provide a predictable starting point for calibration. The result is a performance injector set designed to deliver both increased fueling capability and the refinement needed for a properly tuned street or performance Subaru.
Fuel Injector Clinic Data Match Technology
Fuel Injector Clinic precisely matches each is176-1000h set using its proprietary Data Match Technology. Every injector is individually serial numbered, and the results are documented on the included Data Match Sheet with detailed flow matching and latency information. This injector-specific data gives tuners the information needed to accurately configure the ECU and take advantage of the injectors' short pulse width capabilities.
Each injector is flow tested and rated at 43.5 PSI (3 Bar) with fuel at 90 degrees F using CF-16B calibration fluid. Combined with precise matching and tight manufacturing tolerances, this controlled testing helps deliver consistent fuel delivery and predictable injector performance across the operating range.
Wiring and Installation
The is176-1000h requires an injector plug conversion. PGTUSC4 solder-in pigtails are included with the injector set and can be used to replace the existing injector connectors on the vehicle wiring harness. For an installation that does not require cutting or soldering the factory harness, optional PADPUtoD4 plug-and-play adapters can be purchased instead.
Fuel Injector Clinic uses brand-new, unused injectors for its performance applications rather than relying on remanufactured or core-program injectors. The set includes the O-rings required for the listed application. If your vehicle uses additional aftermarket or unusual fuel-system components, injector fitment should be verified before ordering.
Fitment
- 2004 Subaru STI with FIC RL STi top-feed fuel rail conversion
- 2005 Subaru STI with FIC RL STi top-feed fuel rail conversion
- 2006 Subaru STI with FIC RL STi top-feed fuel rail conversion
- 2005 Subaru Legacy GT with FIC RL STi top-feed fuel rail conversion
- 2006 Subaru Legacy GT with FIC RL STi top-feed fuel rail conversion
FAQs
Will the FIC is176-1000h injectors fit a stock 2004-2006 Subaru STI or 2005-2006 Legacy GT fuel system?
No. The is176-1000h only fits the original tumblers when used with the FIC RL STi top-feed fuel rail conversion. Confirm that the required top-feed conversion is installed before ordering.
Do the FIC is176-1000h injectors require changes to the factory injector wiring?
Yes. PGTUSC4 solder-in pigtails are included for replacing the existing injector connectors. Optional PADPUtoD4 plug-and-play adapters can be used if you prefer to connect the injectors without cutting or soldering the factory harness.
Why Buy Fuel Injector Clinic Injectors From Beefcake Racing?
Beefcake Racing is your source for Fuel Injector Clinic injectors and supporting fuel-system components for high-performance Subaru builds. Whether you are upgrading a street-driven STI or Legacy GT or putting together a more serious turbo combination, our team can help you select the right fueling components for your setup. Questions about Fuel Injector Clinic is176-1000h? Email sales@beefcakeracing.com or call 1-855-827-7223.
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