Spool Stage 3 LPFP Kit | AMG GT, GTS, GTC, GTR (M178)
The Spool Performance Stage 3 LPFP is the production version of the low-pressure fuel pump (LPFP) upgrade for the Mercedes-AMG M178 engine. The system is designed to remove low-pressure side limitations, especially with high power and E85 use.
Product Description
As high-pressure fuel pumps (HPFP) become more efficient, the low-pressure electric fuel pump often becomes a critical bottleneck. The Stage 3 LPFP solves this with a dual-pump design, ensuring sufficient fuel delivery even in demanding conditions.
- Production version, ready-made solution
- Dual pump system
- Secondary pump activates according to boost pressure
- Nearly 2x flow compared to stock
- Supports over 1200 whp low-pressure capacity
- Compatible with all fuels, including E85
Operating Principle
- Primary pump operates normally under light load
- Secondary pump activates as boost increases
- Increases fuel delivery at high loads
- Ensures consistent delivery to high-pressure pumps
Why is an upgrade necessary?
The M178 engine's stock LPFP restricts performance, especially in tuned configurations:
- E85 significantly increases fuel demand
- High power requires more flow capacity
- HPFP cannot operate optimally without sufficient supply
Stage 3 LPFP:
- Removes the low-pressure bottleneck
- Improves system reliability
- Enables very high power levels
Compatibility
Models equipped with the Mercedes-AMG M178 engine:
- AMG GT
- AMG GTS
- AMG GTC
- AMG GTR