Fuel Injector Clinic 1650cc High Impedance Fuel Injector Set for 2016-2025 BMW x40i (IS831-1650H)
Give your BMW x40i the fuel system capacity needed to support serious horsepower with the Fuel Injector Clinic IS831-1650H 1650cc High Impedance Fuel Injector Set. Designed specifically for 2016-2025 BMW x40i applications equipped with an aftermarket intake manifold or port injection kit, this six-injector package delivers exceptional fuel flow while maintaining the excellent idle quality and drivability Fuel Injector Clinic injectors are known for. Whether your build is a powerful street car, dedicated drag car, or high-boost E85 combination, these injectors provide the precision and consistency required for dependable performance.
Built around advanced high impedance ball and seat injector technology, the IS831-1650H offers excellent linearity and superior short pulse width repeatability for accurate tuning across the entire operating range. This kit includes Jetronic Quick Release injector pigtails (PGTJETQ6), with optional USCAR adapter harnesses (PADPJtoU6) available for additional installation flexibility. Every injector is individually flow matched using Fuel Injector Clinic's proprietary Data Match Technology and includes a serial-number-specific calibration sheet with detailed flow and latency values, giving tuners the accurate information needed to optimize performance.
Fuel Injector Clinic's 1650cc high impedance injector is the company's largest high impedance injector compatible with all race fuels. Featuring a stainless alloy valve construction, it delivers excellent idle characteristics while supporting substantial horsepower on both gasoline and E85. It is also compatible with Q16, VP Import, FTW, MTBE oxygenated race fuels, and other performance fuels, making it an excellent choice for demanding street and race applications.
Quick Specs
- Part Number: IS831-1650H
- Injector Size: 1650cc/min
- Injector Quantity: 6
- High impedance (saturated) ball and seat injectors
- Designed for aftermarket intake manifold or port injection kit applications
- Includes Jetronic Quick Release injector pigtails (PGTJETQ6)
- Optional USCAR adapter harnesses available (PADPJtoU6)
- Flow matched using Fuel Injector Clinic Data Match Technology
- Individually serial numbered with injector-specific calibration data sheet included
- Flow tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit
- Stainless alloy valve construction
- Compatible with pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and other performance fuels
- Includes all required O-rings for the intended application
- Lifetime warranty against manufacturing defects
Features
- Designed for BMW x40i applications utilizing aftermarket port injection systems
- 1650cc high impedance injectors support high-horsepower street and race combinations
- Includes Jetronic Quick Release injector pigtails for installation
- Optional USCAR adapter harnesses available for additional compatibility
- Excellent injector linearity for precise fuel delivery
- Superior short pulse width repeatability improves idle quality and tuning precision
- Fuel Injector Clinic Data Match Technology provides industry-leading injector matching
- Stainless alloy valve construction offers compatibility with gasoline, E85, and race fuels
- Each injector is individually serial numbered and includes a detailed calibration data sheet
- Backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects
Fitment
- 2016-2025 BMW x40i models equipped with the applicable aftermarket intake manifold or port injection kit.
FAQs
What fuels are compatible with the IS831-1650H?
The 1650cc injector features a stainless alloy valve construction and is compatible with pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and virtually all commonly used performance fuels.
Do these injectors replace the factory direct injection injectors?
No. The IS831-1650H is designed for BMW x40i engines equipped with an aftermarket intake manifold or port injection kit. They are intended for supplemental port injection and are not a replacement for the factory direct injection system.
Why Buy From Beefcake Racing?
Beefcake Racing proudly supplies genuine Fuel Injector Clinic products backed by competitive pricing, fast shipping, and expert technical support. Whether you're building a street-driven BMW or an all-out race car, our experienced team can help you select the ideal fueling solution for your combination.
Need help selecting injectors or port injection components for your build?
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
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