1000cc FIC Fuel Injector Clinic Injector LS3 LSA LS7 L76 L92 L99 IS303

Fuel Injector Clinic IS303-1000H 1000cc Injectors LS3 LS7 L99 L76 High Impedance Set of 8

Brand: Fuel Injector Clinic (FIC)
Manufacturer Part Number: IS303-1000H
Flow Rate: 1000cc/min (85 lb/hr) @ 43.5 PSI (3 Bar)
Flow Rate @ 58 PSI: ~1040cc/min (100–110 lb/hr)
Impedance: High Impedance (High-Z / Saturated)
Connector Style: EV6 / USCAR
Injector Type: Ball & Seat
Quantity: Set of 8 Injectors
Condition: Brand New

Product Description

For sale is a brand new Fuel Injector Clinic (FIC) IS303-1000H injector set, engineered for GM LS3-height fuel rail applications. These 1000cc high-impedance injectors are ideal for turbocharged, supercharged, E85, and high-performance street or track builds, delivering excellent drivability, consistent fueling, and strong top-end flow.

Each injector is precision matched using Fuel Injector Clinic’s Data Match Technology, individually flow-tested and serialized, and includes a Data Match Sheet with detailed flow and latency values to make ECU tuning faster and more accurate.

Injectors are flow-tested at 43.5 PSI (3 Bar) at 90°F using CF-16B calibration fluid, offering superior short-pulse width control, smooth idle, and reliable fueling under boost. Designed with stainless internal components for long-term durability and compatibility with pump gas, E85, and race fuels.

Key Features

✔ 1000cc/min High-Output Flow Rate
✔ High Impedance (Plug-and-Tune Friendly)
✔ Precision Flow-Matched Set (±1%)
✔ Excellent Idle & Low-Pulse Performance
✔ Gasoline, E85 & Race Fuel Compatible
✔ Includes All Required O-Rings
✔ Individually Flow-Tested & Serialized
✔ Lifetime Manufacturer Warranty

✔ Brand New — Not Remanufactured