Spool FX-170 Upgraded High Pressure Fuel Pump Kit [N63]

Spool Performance FX-170 High-Pressure Fuel Pump Upgrade – N63 What is the FX-170? The FX-170 is a high-performance upgraded high-pressure fuel pump (HPFP) designed to maximize fueling capacity for BMW N63 engines. Featuring a larger bore than stock, it delivers 50% more flow, significantly increasing fueling headroom for high-horsepower applications. The FX-170 is fully E85 compatible and plug-and-play, requiring no cutting or splicing for installation. Additionally, it operates at 25% higher pressure than stock, allowing injectors to deliver more fuel volume for the same opening time—critical for big turbo setups and ethanol-based tuning. Why Do You Need It? The factory HPFP in the N63 is a major bottleneck when increasing power output. The FX-170 eliminates this limitation by:✔ Boosting fuel flow by 50%, allowing for higher ethanol blends and big turbo support✔ Increasing injector output, extending the fueling limits of the platform✔ Enhancing stability and reliability in high-boost