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 applications

Whether you’re running full E85, hybrid turbos, or high-boost custom tuning, the FX-170 ensures your fueling system keeps up with your performance goals.

What’s Included in the Kit?

• 2x FX-170 Upgraded High-Pressure Fuel Pumps
• 1x Ethanol Content Monitor Kit with mobile app support
• 1x Bosch-Spec 10-Micron High-Flow Fuel Filter
• Upgraded Fuel Lines & Complete Installation Hardware

Spool 10-Micron Fuel Filter

The included 10-micron filter unit offers the best filtration available for the N63 platform, providing superior protection without any pressure drop in the low-side fuel system. This prevents debris from damaging HPFPs and injectors, ensuring long-term reliability.

Spool Ethanol Content Monitor

The Spool ECA (Ethanol Content Analyzer) Kit provides real-time ethanol content and fuel temperature monitoring via the Spool Performance mobile app. Data is transmitted using BLE 4.0 low-energy Bluetooth, ensuring seamless connectivity without interfering with other Bluetooth devices. The kit also includes braided steel nylon-core fuel lines, which are 100% E85 compatible for optimal durability.

Do You Need a Tune?

Yes, calibration changes are required before starting the vehicle with the upgraded pumps installed.
Spool Performance provides calibration details for your tuner and can help connect you with experienced tuners.
Custom tuning is essential to optimize fuel delivery for your specific setup, maximizing power and efficiency.

Note: Spool Performance is a hardware manufacturer and does not provide custom tuning services but offers support for tuning-related inquiries.

Low-Pressure Fuel Pump (LPFP) Upgrade – Critical for HPFP Longevity

Proper low-pressure fueling is essential for the durability and performance of high-pressure pumps and injectors in direct injection (DI) systems. Insufficient LPFP supply can cause premature wear or failure of the HPFP due to improper fuel lubrication.

Low-pressure fuel starvation damage is detectable and will void warranty coverage. Ensure your fuel system is adequately upgraded to support high-power applications.