Fuel Injector Clinic 1200cc High-Z Injector Set — Holley GM Composite Intakes

Fuel Injector Clinic 1200cc High-Z Injector Set — Holley GM Composite Intakes

Part Numbers: ISH03-1200H & PGTJETR8Q

The Fuel Injector Clinic ISH03-1200H is an eight-injector high-impedance set for Holley GM composite intake applications. FIC’s standard product configuration is ISH03-1200H & PGTJETR8Q, which includes eight Jetronic quick-release solder-in pigtails. FIC also offers EV1 and EV6 direct-connection configurations, plus a Multec II harness option using the PADPJtoGM8 plug-and-play adapter set.

Each injector is rated at 1200 cc/min and 110 lb/hr at FIC’s standard 43.5 psi / 3 bar test pressure. At 58 psi / 4 bar, FIC rates each injector at approximately 1350 cc/min and 130 lb/hr.

The injectors use a saturated / high-impedance design and are engineered for strong linearity and short-pulse-width repeatability. FIC provides plug-and-play GM ECU injector data and matches each set using its Data Match Technology to support accurate fueling, stable idle, and predictable drivability when the ECU is configured with the correct injector characterization.

Each injector is individually serial numbered, and the supplied Data Match Sheet provides measured flow-matching and latency information. FIC flow-tests and rates the injectors at 43.5 psi / 3 bar with fuel at 90°F using CF-16B calibration fluid. FIC also states that its injector range is designed for both gasoline and E85 applications.

Key Features

• Set of eight Fuel Injector Clinic high-impedance injectors
• Designed for Holley GM composite intake applications
• Standard FIC product configuration: ISH03-1200H & PGTJETR8Q
• 1200 cc/min / 110 lb/hr per injector at 43.5 psi / 3 bar
• Approximately 1350 cc/min / 130 lb/hr per injector at 58 psi / 4 bar
• Saturated / high-impedance electrical design
• Standard configuration includes eight Jetronic quick-release solder-in pigtails, PGTJETR8Q
• EV1 direct-connection option available
• EV6 direct-connection option available
• Multec II harness option available using PADPJtoGM8 adapters
• Compatible with gasoline and E85
• Fuel Injector Clinic Data Match Technology
• Each injector individually serial numbered
• Data Match Sheet with flow-matching and latency information included
• Plug-and-play GM ECU injector data available from Fuel Injector Clinic
• Short-pulse-width control intended to support stable idle and drivability with correct ECU data
• All O-rings required for the intended application included
• Fuel Injector Clinic lifetime warranty against defects in original manufacture
• Previously sold as ISH03-1100H

Kit Includes

• Eight Fuel Injector Clinic 1200cc high-impedance injectors, ISH03-1200H
• Eight Jetronic quick-release solder-in pigtails, PGTJETR8Q, with the standard configuration
• Application-specific injector O-rings
• Individual injector serial numbers
• Fuel Injector Clinic Data Match Sheet with flow-matching and latency information
• Access to applicable Fuel Injector Clinic GM ECU injector data

Technical Specifications

Flow and Test Conditions

• Nominal injector size: 1200 cc/min
• Flow at 43.5 psi / 3 bar: 1200 cc/min per injector
• Mass flow at 43.5 psi / 3 bar: 110 lb/hr per injector
• Flow at 58 psi / 4 bar: approximately 1350 cc/min per injector
• Mass flow at 58 psi / 4 bar: 130 lb/hr per injector
• FIC test pressure: 43.5 psi / 3 bar
• FIC test fuel temperature: 90°F
• FIC calibration fluid: CF-16B

Electrical and Mechanical Configuration

• Injector type: saturated / high impedance
• Quantity: eight injectors
• Application family: Holley GM composite intakes
• Standard product configuration: ISH03-1200H & PGTJETR8Q
• Standard wiring: eight Jetronic quick-release solder-in pigtails
• EV1 direct-connect configuration available
• EV6 direct-connect configuration available
• Multec II plug-and-play configuration available using PADPJtoGM8
• PADPJtoGM8 interface: Jetronic / EV1 female to GM / Delphi male
• Application-specific O-rings included

Fuel Compatibility

• Gasoline
• E85

Injector Matching and ECU Data

• Matched using Fuel Injector Clinic Data Match Technology
• Each injector individually serial numbered
• Data Match Sheet supplied with measured matching and latency information
• Plug-and-play GM ECU injector data available from Fuel Injector Clinic
• Correct injector characterization must be entered into the ECU for proper fueling, idle quality, transient response, and drivability

Available Connector and Wiring Configurations

• Solder-In Pigtails — ISH03-1200H & PGTJETR8Q: FIC’s standard configuration. Includes eight Jetronic quick-release pigtails for replacing the existing injector connectors.
• EV1 Connector — Direct Connection: direct-connect configuration for a harness already equipped with the matching EV1 connector.
• EV6 Connector — Direct Connection: direct-connect configuration for a harness already equipped with the matching EV6 connector.
• Multec II Connector — ISH03-1200H & PADPJtoGM8: uses eight Jetronic / EV1-female to GM / Delphi-male adapters, allowing connection to the applicable factory-style harness without cutting or soldering the existing injector wiring.

Application Notes

• Fuel Injector Clinic lists ISH03-1200H specifically for Holley GM composite intake applications.
• This is an intake-family application rather than a vehicle-specific listing, so connector choice must match the engine harness being used.
• The 1200cc rating is measured at 43.5 psi / 3 bar. At 58 psi / 4 bar, FIC rates the same injector at approximately 1350 cc/min and 130 lb/hr.
• The standard ISH03-1200H & PGTJETR8Q configuration requires replacing the existing injector connectors with the included solder-in pigtails.
• EV1 and EV6 direct-connect configurations eliminate pigtails when the engine harness already uses the matching connector.
• The Multec II option uses PADPJtoGM8 plug-and-play adapters rather than cutting or soldering the existing harness.
• This injector set was previously sold by FIC as ISH03-1100H.
• Use FIC-supplied injector characterization and latency data rather than generic 1200cc injector values.
• Fuel pumps, fuel-pressure regulator, fuel rails, filters, feed and return plumbing, ECU, ECU configuration, and tuning are not included.
• Aftermarket or unusual fuel-rail and manifold combinations should be checked for injector fitment before ordering.
• This is a port-fuel-injector set and is not a direct-injection injector replacement.

Emissions and Competition-Use Notice

Performance fuel-system modifications may affect vehicle emissions compliance and road-use legality. The purchaser and installer are responsible for determining that the completed vehicle complies with all applicable emissions, registration, fuel-system, and competition-use requirements.