Fuel Injector Clinic 1440cc Fuel Injector Set - High Z (is176-1440h) - 2004-2006 Subaru STI / 2005-2006 Legacy GT
Step up the fuel capacity of your top-feed-converted 2004-2006 Subaru STI or 2005-2006 Legacy GT with the Fuel Injector Clinic is176-1440h 1440cc High-Z fuel injector set. This four-injector set combines saturated, high-impedance Ball & Seat injectors with FIC's proprietary Data Match Technology, delivering the precise fuel control, excellent idle characteristics, and high-flow capability demanded by serious turbocharged Subaru builds. Positioned between FIC's 1200cc and 1650cc offerings, the 1440cc injector provides substantial fueling headroom while retaining the short pulse width control needed for strong street drivability.
Important fitment note: The is176-1440h 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 is equipped with the required FIC top-feed conversion before ordering.
Stainless alloy valve construction makes these 1440cc injectors compatible with 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 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.
Specifications
- Manufacturer: Fuel Injector Clinic
- Part Number: is176-1440h
- Flow Rate: 1440cc/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
- Solder-In Pigtail Option: 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 1440cc/min performance fuel injectors
- High-Z saturated Ball & Seat injector design
- High fuel capacity for demanding turbocharged Subaru applications
- Excellent idle performance for 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 gasoline, E85, and a wide range of race fuels
- Flow tested and rated at 43.5 PSI (3 Bar)
- Testing performed at 90 degrees F using CF-16B calibration fluid
- Optional PADPUtoD4 adapters eliminate the need to cut or solder the factory harness
- Includes the 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
1440cc Fuel Capacity With Street-Friendly Control
The is176-1440h is built for Subaru combinations that need considerably more fuel than smaller injectors can provide without sacrificing the control required for a well-mannered street car. Its 1440cc/min flow rate gives higher-output builds substantial fueling capability for gasoline, E85, and compatible race fuels, while excellent short pulse width behavior helps the ECU accurately meter fuel during idle and part-throttle operation.
For the tuner, that combination of high flow and precise control means a better foundation for building a calibration that performs across the entire operating range. Tight injector matching also promotes consistent cylinder-to-cylinder fueling, helping a properly configured fuel system deliver predictable performance as power and fuel demand increase.
Fuel Injector Clinic Data Match Technology
Fuel Injector Clinic precisely matches each is176-1440h set using its proprietary Data Match Technology. Every injector receives an individual serial number, and its results are documented on the included Data Match Sheet with detailed flow matching and latency information. Accurate injector characterization gives tuners the data needed to take full advantage of the injector's flow capacity and short pulse width control.
Each injector is flow tested and rated at 43.5 PSI (3 Bar) with fuel at 90 degrees F using CF-16B calibration fluid. This controlled testing, combined with FIC's matching process, helps provide the consistency and predictable injector behavior required for precise ECU calibration and strong drivability.
Fuel Compatibility
The 1440cc 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 fuel compatibility makes the is176-1440h a versatile choice for Subaru builds that may move between street fuels, ethanol-based fuels, and compatible race-fuel combinations as performance goals change.
Wiring and Installation
The is176-1440h requires an injector connector conversion. Fuel Injector Clinic offers PGTUSC4 solder-in pigtails for replacing the existing injector connectors. For an installation that avoids cutting or soldering the factory harness, optional PADPUtoD4 plug-and-play adapters can be selected instead.
Fuel Injector Clinic uses brand-new, unused injectors for its performance applications rather than relying on remanufactured or core-program injectors. The injectors are supplied with the O-rings required for the listed application. Vehicles using additional aftermarket or unusual fuel-system configurations should have injector compatibility 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 is176-1440h injectors fit a stock 2004-2006 STI or 2005-2006 Legacy GT fuel system?
No. This injector set 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.
Can the FIC is176-1440h 1440cc injectors be used with E85 and race fuel?
Yes. Their stainless alloy valve construction is compatible with pump gasoline, E85, Q16, VP Import, FTW, and other MTBE oxygenated race fuels, making them suitable for a wide range of properly configured 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 upgrading a street-driven STI or Legacy GT or putting together a higher-output turbo combination, our team can help you choose the right injectors and supporting components for your setup. Questions about Fuel Injector Clinic is176-1440h? Email sales@beefcakeracing.com or call 1-855-827-7223.
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