Spool FX-170 Gen1 B58 Upgraded High Pressure Fuel Pump

The Spool Performance FX-170 High-Pressure Fuel Pump is a powerful upgrade designed for BMW Gen1 B58 engines. With 50% more fuel flow than the stock pump, the FX-170 supports higher ethanol concentrations, bigger turbos, and increased power output. This plug-and-play solution is fully E85 compatible, providing a significant upgrade in both flow and pressure without requiring any cutting or splicing for installation. The FX-170 operates at 25% higher pressure than the stock pump, allowing injectors to deliver more fuel for optimal performance.

Key Features:

• 50% Increased Fuel Flow: Enhanced bore size allows for a 50% increase in fuel flow, supporting higher ethanol concentrations and larger turbos.
• E85 Compatibility: Fully compatible with ethanol blends, making it perfect for performance applications.
• Higher Operating Pressure: Capable of running at 25% more pressure, increasing injector performance and fuel delivery.
• Plug-and-Play Installation: Easy to install with no modifications needed.

Why You Need It: The stock HPFP on the B58 engine is limited in capacity when pushing for higher performance. The FX-170 offers a massive 50% increase in flow, which raises the fueling limits, enabling you to safely run bigger turbos and higher ethanol blends for significantly more power.

Kit Includes:

• 2 x FX-170 upgraded high-pressure fuel pumps
• Upgraded fuel lines and all necessary installation hardware

Optional Add-Ons:

• Ethanol Content Monitor kit with mobile app
• Bosch spec 10-micron high-flow fuel filter

Additional Components:

• Ethanol Analyzer: Ensures you know the exact ethanol content in your fuel, critical for maintaining safe operation with performance E85 tunes.
• Ethanol Sensor App: A free app with an ethanol mix calculator to ensure the perfect blend. It works with or without the Spool Analyzer kit.
• 10-Micron Filter Unit: Provides top-notch filtration without a pressure drop, protecting your pump and injectors from debris.

Tune Changes Required: Upgrading to the FX-170 requires calibration adjustments. Be sure to apply these changes before operating your vehicle to avoid any damage and maintain warranty coverage. Spool Performance offers calibration data to your tuner and can assist in connecting you with tuners experienced with these pumps.

Low-Pressure Fuel Pump Upgrade: Ensure your low-pressure fuel system is capable of supporting the high demands of this upgraded high-pressure pump. Inadequate low-pressure fueling can lead to damage and void your warranty, so be sure to plan out your system with the appropriate upgrades.

About Spool Performance: Spool Performance is renowned for delivering cutting-edge fuel system upgrades for BMW platforms, pushing the boundaries of performance while maintaining reliability.

Note: 'New' merchandise may be returned for exchange or refund within 15 days from the date of shipment. 'New' merchandise must be unused and free from installation or mounting damage. Installation or modification of parts waives your right to returns, refunds, or exchanges.