Fuel Injector Clinic 650cc High Impedance Fuel Injector Set (IS803-0650H) - 1986-1991 BMW E30 M3
Give your classic BMW E30 M3 the fuel delivery needed for today's performance upgrades with the Fuel Injector Clinic IS803-0650H Fuel Injector Set. This premium set of four 650cc saturated (high impedance) ball and seat injectors is engineered specifically for the E30 M3 and delivers the precise fuel control required for naturally aspirated builds, turbo conversions, and supercharged applications. Exceptional linearity and industry-leading short pulse width repeatability provide smooth idle characteristics, crisp throttle response, and outstanding drivability while making the tuning process easier and more consistent.
Every injector is individually flow tested, matched, and serial numbered using Fuel Injector Clinic's exclusive Data Match Technology. Each set includes a detailed Data Match Sheet with individual flow and latency values, allowing for accurate ECU calibration and consistent cylinder-to-cylinder fueling. These injectors are flow tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit, include all required O-rings for the factory application, and are backed by Fuel Injector Clinic's Lifetime Warranty against defects in original manufacture. PGTUSC4 injector pigtails are included, while optional PADPUtoJ4 Plug and Play adapters are available for installers who prefer not to modify the factory wiring harness.
Quick Specs
- Manufacturer: Fuel Injector Clinic
- Part Number: IS803-0650H
- Injector Size: 650cc
- Quantity: Four injectors
- Injector Type: Saturated / High Impedance Ball and Seat
- Vehicle Application: BMW E30 M3
- Included: PGTUSC4 injector pigtails
- Optional Adapter: PADPUtoJ4 Plug and Play adapters
- Flow Rating: Rated at 43.5 PSI (3 Bar)
- Flow Test Fluid: CF-16B calibration fluid
- Flow Test Temperature: 90 degrees Fahrenheit
- Matching Method: Fuel Injector Clinic Data Match Technology
- Installation: Includes all required O-rings for the factory application
- Warranty: Lifetime Warranty against defects in original manufacture
Features
- Complete set of four 650cc saturated (high impedance) fuel injectors.
- Designed specifically for the 1986-1991 BMW E30 M3.
- Brand-new injectors with no remanufactured or core exchange components.
- High impedance ball and seat injector design.
- Excellent linearity across the entire operating range.
- Superior short pulse width repeatability for simplified tuning.
- Matched using Fuel Injector Clinic's proprietary Data Match Technology.
- Each injector is individually serial numbered.
- Includes Data Match Sheet with individual flow and latency values.
- Flow tested at 43.5 PSI (3 Bar).
- Tested at 90 degrees Fahrenheit using CF-16B calibration fluid.
- Provides excellent idle quality, drivability, and throttle response.
- Includes PGTUSC4 injector pigtails.
- Optional PADPUtoJ4 Plug and Play adapters available separately.
- Includes all required O-rings for the factory application.
- Backed by Fuel Injector Clinic's Lifetime Warranty.
Fitment
- 1986 BMW E30 M3
- 1987 BMW E30 M3
- 1988 BMW E30 M3
- 1989 BMW E30 M3
- 1990 BMW E30 M3
- 1991 BMW E30 M3
FAQs
Will I need to modify my factory wiring harness?
Yes. This injector set includes PGTUSC4 injector pigtails that can be soldered into your factory harness. If you prefer a no-cut installation, optional PADPUtoJ4 Plug and Play adapters are available separately.
Why doesn't Fuel Injector Clinic use remanufactured injectors?
Fuel Injector Clinic builds its performance injector sets using brand-new injectors rather than remanufactured or core-based units to maximize long-term reliability and performance consistency.
Why Buy from Beefcake Racing?
Beefcake Racing is your trusted source for genuine Fuel Injector Clinic products, expert technical advice, and exceptional customer service. Whether you're restoring an iconic E30 M3 or building a modern high-horsepower project, we can help you choose the right fuel system components for your combination. Contact us at sales@beefcakeracing.com or call 1-855-827-7223 for professional assistance.
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