Spool FX-200 HPFP Kit | AMG M133
The Spool Performance FX-200 is a high-pressure fuel pump (HPFP) performance upgrade for Mercedes-AMG M133 engines. This solution is designed to maximize fuel capacity and remove the limitations of the stock system in high-power tuned configurations.
What is the FX-200?
The FX-200 is an upgraded high-pressure pump with a larger piston diameter than the stock pump. This allows for approximately +80% more fuel flow.
- Approx. +80% flow compared to stock
- Full E85 compatibility
- Plug & Play installation with no cutting or wiring modifications
- Enables significantly higher fuel delivery
Additional capacity allows for:
- Higher ethanol blends
- Larger turbochargers
- Higher power levels
Why is an upgrade necessary?
The M133 engine's stock HPFP is a significant limitation in tuning:
- Insufficient fuel supply for higher power
- Limited use of ethanol blends
The FX-200:
- Significantly increases fuel system capacity
- Expands the platform's fuel limits
- Enables more powerful and safer tuning
Package contents
- 1 x FX-200 High-Pressure Fuel Pump
- Upgraded fuel lines + installation hardware
- Bosch 10-micron high-flow fuel filter
- Ethanol content monitoring system (optional, with mobile app)
Spool 10-micron filter
- Top-tier filtration without significant pressure drop
- Protects HPFP and injectors from contaminants
- Recommended addition for high-power configurations
Spool Ethanol Content Monitor (optional)
- Real-time ethanol content and fuel temperature display
- Mobile application with BLE 4.0 connectivity
- Enables precise fuel mixture control
- Full E85 compatibility for fuel lines
Software requirements
Software modifications are required to operate the pump:
- Calibration must be performed before use
- Operating without calibration can cause damage and void the warranty
Spool:
- Provides calibration data to the tuner
- Assists in finding an experienced tuner if needed
Note: Spool does not offer ready-made custom tunes
Important Note: LPFP
The low-pressure fuel system is critical:
- Insufficient LPFP can damage the HPFP and injectors
- HPFP lubrication relies on fuel flow
- Lack of fuel can lead to wear and failure
Recommendation: ensure adequate low-pressure side upgrade