1000cc BMW M3 E46 Fuel Injectors

The stock injectors on the BMW E46 M3 S54 engine are great for factory power levels, but once you start modifying them for increased horsepower, they quickly become a bottleneck. Larger injectors, like Excess Injectors' 1000cc set, provide the necessary fuel flow to support advanced tuning while maintaining smooth drivability.

What's Included in the Kit?

Every set of 1000cc BMW M3 E46 Fuel Injectors from Excess Injectors includes:
✔ 6 injectors, perfectly matched for consistent performance
✔ USCAR injector plug style for seamless installation
✔ One-piece wiring harness adaptor for easy connectivity
✔ Pre-tested tuning data for a hassle-free setup
✔ Access to cloud-stored test data for complete transparency

Backed by a Lifetime Warranty

Performance parts often wear out over time, but Excess Injectors stand by their quality with a lifetime guarantee. If an injector fails due to manufacturing defects, they'll replace it—no questions asked. Since every set's test data is stored in the cloud, replacements are matched to your original set for seamless performance continuity.

Key Benefits

Exact Match Data for Precise Tuning

Each set of Excess Injectors comes with custom tuning data, specific to your injectors, ensuring seamless integration with your ECU. No two data sets are the same, making tuning faster and eliminating guesswork.

Pre-Tuned Files for 11 Different ECUs

Forget spending hours dialing in fuel trims—these injectors come with pre-tested tune files for popular ECUs, reducing dyno time and optimizing performance right out of the box.

Stainless Steel Internals for Maximum Durability

Designed for all fuel types, including ethanol blends, these injectors feature corrosion-resistant stainless steel internals, ensuring long-lasting reliability even in aggressive setups.

Tightly Matched Sets for Consistency

Unlike generic injectors that vary in performance, Excess Injectors are:

• Flow matched within 1%
• Deadtime matched within 2%

This means perfect fuel distribution across all cylinders, preventing misfires and uneven combustion.

Rigorous Testing for Precision & Reliability

Every injector undergoes over 6,500 flow tests, with more than 265,000 individual data points recorded, ensuring absolute accuracy under strict conditions:

• Pressure: Electronically controlled at 3 bar
• Temperature: Maintained at 21°C
• Voltage: Stable at 14V

Because the testing parameters are so precise, results remain consistent every time.