Fuel Injector Clinic 1650cc Fuel Injector Set - High Z (is176-1650h) - 2004-2006 Subaru STI / 2005-2006 Legacy GT
Feed a serious turbocharged Subaru build with the Fuel Injector Clinic is176-1650h 1650cc High-Z fuel injector set for top-feed-converted 2004-2006 Subaru STI and 2005-2006 Legacy GT applications. This four-injector set combines substantial 1650cc/min fuel capacity with saturated, high-impedance Ball & Seat injectors engineered for excellent idle performance and precise short pulse width control. Fuel Injector Clinic's proprietary Data Match Technology adds the consistency tuners need to accurately control this level of fuel flow, making the is176-1650h an excellent choice for high-horsepower gasoline, E85, and race-fuel combinations.
Important fitment note: The is176-1650h 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.
The stainless alloy valve construction provides broad fuel compatibility, including pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels. Each injector is individually serial numbered and precisely matched using FIC Data Match Technology, with detailed flow matching and latency information supplied on the included Data Match Sheet. Fuel Injector Clinic flow tests and rates these injectors at 43.5 PSI (3 Bar) with fuel at 90 degrees F using CF-16B calibration fluid. PGTJETR4Q solder-in pigtails are included, or optional PADPJtoD4 plug-and-play adapters can be used to avoid cutting or soldering the factory wiring harness.
Specifications
- Manufacturer: Fuel Injector Clinic
- Part Number: is176-1650h
- Flow Rate: 1650cc/min
- Injector Quantity: 4
- Injector Type: Saturated / high impedance Ball & Seat
- Impedance: High-Z / high impedance
- Valve Construction: Stainless alloy
- 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
- Fuel Compatibility: Pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels
- Included Pigtails: PGTJETR4Q
- Optional Plug-and-Play Adapters: PADPJtoD4
- 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 1650cc/min performance fuel injectors
- High-flow design for high-horsepower turbocharged Subaru applications
- Saturated, high-impedance Ball & Seat injector construction
- Excellent idle performance in properly tuned street-driven vehicles
- Superior short pulse width control for precise low-load fueling
- Fuel Injector Clinic proprietary Data Match Technology
- Each injector is individually serial numbered
- Included Data Match Sheet provides detailed flow matching and latency information
- Stainless alloy valve construction provides broad fuel compatibility
- Compatible with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels
- Flow tested and rated at 43.5 PSI (3 Bar)
- Testing performed with fuel at 90 degrees F using CF-16B calibration fluid
- Includes PGTJETR4Q solder-in pigtails
- Optional PADPJtoD4 adapters provide plug-and-play connection to the factory 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
1650cc Fuel Capacity for Serious Subaru Builds
The is176-1650h is built for performance combinations that demand major fuel capacity without sacrificing the control required for street drivability. Its 1650cc/min flow rate gives high-output STI and Legacy GT builds the fueling headroom required for demanding gasoline and E85 combinations, while excellent short pulse width control allows the ECU to accurately meter fuel during idle and part-throttle operation.
That balance becomes increasingly important as injector size grows. An injector capable of supplying enough fuel at high engine load also needs predictable behavior when the engine requires only a fraction of that capacity. Fuel Injector Clinic combines high flow, precise matching, and detailed injector characterization to provide tuners with the control needed to build a clean calibration throughout the operating range.
Fuel Injector Clinic Data Match Technology
Fuel Injector Clinic precisely matches each is176-1650h set using its proprietary Data Match Technology. Every injector is individually serial numbered, and its results are documented on the included Data Match Sheet with detailed flow matching and latency information. This injector-specific data gives tuners a strong foundation for accurate ECU calibration and helps maintain consistent fuel delivery across all four cylinders.
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 FIC's precise matching process and superior short pulse width control, this testing helps make these large injectors easier to tune while maintaining excellent drivability in properly configured applications.
Broad Fuel Compatibility
The 1650cc High-Z injector uses stainless alloy valve construction and is compatible with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels. This broad compatibility makes the is176-1650h a versatile option for high-performance Subaru builds that may use different fuels as power levels, tuning strategies, or vehicle requirements change.
Wiring and Installation
The is176-1650h requires an injector plug conversion. PGTJETR4Q solder-in pigtails are included with the injector set and can be installed in place of the existing injector connectors on the vehicle wiring harness. For an installation that does not require cutting or soldering the factory harness, optional PADPJtoD4 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 is176-1650h injectors fit a stock 2004-2006 Subaru STI or 2005-2006 Legacy GT fuel system?
No. The is176-1650h 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.
What fuels are compatible with the FIC is176-1650h 1650cc injectors?
The stainless alloy valve construction allows these injectors to be used with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels, making them suitable for a wide range of properly configured high-performance fuel systems.
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 building an E85-powered street car or a higher-horsepower turbo combination, our team can help you select the right injectors and supporting fuel-system components for your setup. Questions about Fuel Injector Clinic is176-1650h? Email sales@beefcakeracing.com or call 1-855-827-7223.
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