Spool Performance FX-350 Upgraded High Pressure Fuel Pump System | AMG E63 [M177]

Maximize Fueling Capability with the Spool FX-350 HPFP Upgrade for AMG E63 M177
The Spool Performance FX-350 High-Pressure Fuel Pump System is the ultimate fueling solution for the Mercedes-AMG E63 equipped with the M177 engine. Developed to exceed the performance of the earlier FX200 model, the FX-350 delivers significantly higher fuel pressure and flow, ensuring your engine receives the precise fueling it needs for high-power builds, ethanol blends, and larger turbo setups.

Whether you're aiming for maximum horsepower or simply want a future-proof fueling system, the FX-350 is engineered to support your ambitions with reliability and efficiency.

Performance Highlights:

• 35MPa Fuel Pressure Capability
  Delivering a remarkable 35MPa (over 5,000 PSI), the FX-350 increases fuel flow by up to 90% compared to the factory high-pressure fuel pump. This ensures your injectors can deliver up to 40% more fuel before hitting injector window limitations.

• Superior Fuel Atomization
  Higher pressure enables finer fuel atomization, which leads to improved combustion efficiency, higher power output, better fuel economy, and reduced emissions.

• Supports High-Powered Builds
  The FX-350 is designed to accommodate aggressive tuning, larger turbos, and high ethanol content fuels like E85, making it an essential upgrade for serious performance applications.

Why You Need the FX-350:

The stock HPFP on M177 engines becomes a major limitation when increasing boost, switching to ethanol, or upgrading turbos. The FX-350 overcomes this with unmatched flow capacity, enabling your build to reach its full potential without running into fueling limitations.

Complete Kit Includes:

• 2 x FX-350 Upgraded High-Pressure Fuel Pumps

• Bosch-Spec 10-Micron High-Flow Fuel Filter

  • Best-in-class filtration with no noticeable pressure drop

• Upgraded Fuel Lines

  • Nylon-coated, braided steel with PTFE core, 100% E85 compatible

• All Necessary Installation Hardware

• Optional: Ethanol Content Monitor (ECA Kit)

  • BLE 4.0 wireless mobile app integration

  • Real-time ethanol content and fuel temperature monitoring

  • Seamless data delivery without interfering with existing Bluetooth devices

Tune Required – Calibration Support Provided:

Upgraded pumps require tuning changes before startup to prevent damage and preserve warranty coverage. Spool Performance provides calibration specs to your tuner and can connect you with experienced tuning partners to ensure proper setup.

Note: Spool Performance does not provide custom tuning but offers full support to your tuner as needed.

Low Pressure Fuel Pump Considerations:

To maintain the integrity and performance of the FX-350 HPFP system, an upgraded low pressure fuel pump (LPFP) is strongly recommended. The HPFP relies on adequate low-pressure fueling for cooling and lubrication. Inadequate LPFP support can cause pump damage and void warranty coverage.

Key Benefits:

• Supports significant horsepower increases

• Compatible with E85 and ethanol blends

• Improved fuel atomization for better combustion

• Enhanced injector flow efficiency

• Plug-and-play design with OEM-style integration

• Optional Bluetooth Ethanol Monitoring App

Vehicle Fitment:

• Mercedes-AMG E63 / E63 S (W213)

• Engine: M177 Twin-Turbo V8

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.