Spool FX-200 HPFP Kit | AMG GT / GTS / GTC / GTR (M178)
The Spool Performance FX-200 is a high-pressure fuel pump (HPFP) performance upgrade for Mercedes-AMG M178 engines. This solution is designed for high-power configurations of the AMG GT series, where the standard fuel system is insufficient to support increasing power goals.
What is the FX-200?
The FX-200 is an upgraded high-pressure pump with a larger piston diameter than the standard one. This enables approximately +80% more fuel flow compared to the original pump.
- Approximately +80% flow compared to stock
- Full E85 compatibility
- Plug & Play installation without cutting or wiring modifications
- Operating pressure up to approx. 250 bar
- Improves injector flow and shortens injection time
The additional capacity allows for:
- Higher ethanol blends
- Larger turbochargers
- Significantly higher power levels
Why is an upgrade necessary?
The M178 engine's standard HPFP is a clear limitation for tuning:
- Insufficient fuel supply for high power levels
- Limited use of ethanol blends
FX-200:
- Significantly increases fuel system capacity
- Expands platform fuel limits
- Enables more efficient and safer tuning
Package contents
- 2 x FX-200 high-pressure fuel pumps
- Upgraded fuel lines + installation hardware
- Bosch 10-micron high flow fuel filter
- Ethanol content measurement system (optional, with mobile app)
Spool 10-micron filter
- Top-tier filtration without significant pressure drop
- Protects HPFP and injectors from contaminants
- Optimized for Mercedes platform
Spool Ethanol Content Monitor (optional)
- Real-time ethanol content and fuel temperature display
- Mobile app with BLE 4.0 connectivity
- Enables precise fuel mixture control
- Full E85 compatibility for fuel lines
Software requirements
Operating the pump requires software modifications:
- Calibration must be performed before use
- Without adjustment, use 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 is based on fuel flow
- Lack of fuel can lead to wear and failure
Recommendation: ensure adequate low-pressure side upgrade