Spool Performance G63 / G550 AMG [M177] Spool FX-170 Upgraded High Pressure Pump Kit

The Spool Performance FX-170 is an upgraded high-pressure fuel pump designed to significantly enhance the fueling capacity of your Mercedes-AMG G63 / G550 (M177) engine. Featuring a larger bore size than the stock pump, the FX-170 offers a substantial 50% increase in fuel flow, making it ideal for performance enthusiasts who want to push the limits of their vehicle with larger turbos or higher ethanol concentrations. Completely E85 compatible and fully plug-and-play, this kit requires no cutting or splicing for installation, ensuring an easy upgrade process.

Key Features:

• 50% More Flow: Upgraded bore size allows for much higher fuel flow compared to the stock pump, perfect for higher performance tuning.
• E85 Compatible: Run higher ethanol concentrations safely without compromising on performance.
• Plug-and-Play Installation: No cutting or splicing required for an easy installation process.
• Supports Bigger Turbos: With increased flow, the FX-170 can fuel larger turbo setups efficiently.

Why You Need It:

The stock high-pressure fuel pump (HPFP) on M177 engines is limited when it comes to supporting higher power outputs and increased ethanol use. The FX-170 delivers 50% more fuel flow, giving you the flexibility to push your engine further with larger turbos and higher ethanol blends like E85. This upgrade ensures that your engine gets the fuel it needs, eliminating bottlenecks in the fuel system and unlocking higher performance potential.

What’s Included in the Kit:

• 2 x FX-170 Upgraded High-Pressure Fuel Pumps
• 1 x Ethanol Content Monitor (if selected) with mobile apps
• 1 x Bosch spec 10-micron High-Flow Fuel Filter
• Upgraded Fuel Lines and all necessary installation hardware

Spool 10-Micron Filter Unit:

The kit includes a 10-micron fuel filter unit that offers the highest level of filtration available on the M177 platform. This filter helps protect your high-pressure fuel pump and injectors from debris without causing a noticeable pressure drop in the low-side fuel system.

Spool Ethanol Content Monitor:

The Spool Ethanol Content Analyzer (ECA) features a digital readout for in-tank ethanol content and fuel temperature. The mobile app, compatible with Bluetooth 4.0, provides real-time readings without affecting other Bluetooth functions on your phone. For flex-fuel implementation, the ECA module includes a 0-5V filtered output. The kit also comes with fuel lines that are 100% E85 compatible, ensuring durability and performance.

Are Tune Changes Required?

Yes, tune changes are necessary when upgrading to the FX-170 pumps. Calibration adjustments must be applied before starting the engine to prevent damage and maintain the product warranty. Spool Performance provides calibration details to your tuner and can help connect you with experienced tuners who can optimize the setup for your specific vehicle and conditions.

Low Pressure Fuel Pump Upgrade:

Upgrading your low-pressure fuel pump is crucial for maintaining the longevity and performance of the high-pressure pumps and injectors in a direct-injection system. Insufficient low-pressure fueling can lead to damage due to fuel starvation. Ensure you upgrade your low-pressure system as part of your fuel system build to avoid warranty issues related to inadequate fueling.

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.