Spool FX-170 Upgraded High Pressure Pump Kit [S55] - SP-FX-S55

The Spool Performance FX-170 High-Pressure Fuel Pump Kit is a must-have upgrade for BMW S55 engines, engineered to deliver up to 50% more fuel flow compared to the stock HPFP. This pump is ideal for enthusiasts looking to run higher ethanol concentrations or bigger turbo setups. Fully E85 compatible and completely plug-and-play, the FX-170 pump operates at 25% higher pressure than stock, allowing injectors to deliver more fuel for enhanced performance. The kit includes everything needed for installation, ensuring a seamless upgrade to your fuel system.

Key Features:

• 50% Increased Fuel Flow: The FX-170’s larger bore design delivers up to 50% more flow, supporting higher ethanol concentrations and larger turbos.
• E85 Compatibility: Fully compatible with ethanol blends, making it ideal for high-performance tuning.
• Higher Operating Pressure: Operates at 25% higher pressure than stock pumps, increasing injector fuel delivery.
• Plug-and-Play Installation: No cutting or splicing required, making it a hassle-free upgrade.

Why You Need It: The stock HPFP on BMW S55 engines has limited capacity, which becomes a bottleneck when tuning for more power. The FX-170 pump provides a significant increase in fuel flow, raising the fueling limits of the platform, allowing you to run bigger turbos and higher ethanol blends for more aggressive tuning.

Kit Includes:

• 2 x FX-170 upgraded high-pressure fuel pumps
• 1 x Ethanol Content Monitor kit with mobile app
• 1 x Bosch spec 10-micron high-flow fuel filter
• Upgraded fuel lines and all necessary installation hardware

Additional Components:

• 10-Micron Filter Unit: Offers superior filtration without noticeable pressure drops, ensuring the high-pressure pump and injectors remain protected from debris.
• Ethanol Content Monitor: Real-time in-tank ethanol content and fuel temperature monitoring with the Spool ECA app via BLE 4.0 technology. The fuel lines included are 100% E85 compatible.

Tune Changes Required: Upgrading to the FX-170 pumps requires calibration adjustments. It’s crucial to implement these changes before operating the vehicle to avoid potential damage and warranty voidance. Spool Performance provides calibration data to your tuner and can connect you with experienced tuners for the best results. Proper tuning ensures maximum performance gains from the FX-170.

Low-Pressure Fuel Pump Consideration: Upgrading your low-pressure fuel system is essential to ensure the durability of the high-pressure pumps. Low-pressure starvation can cause damage to the HPFP piston and bore, voiding the warranty. Plan your fuel system upgrades accordingly for reliable performance.

About Spool Performance: Spool Performance is a leader in high-performance fuel system components for BMW platforms, dedicated to delivering innovative solutions that enhance performance and 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.