Description
The Dorch Engineering N55 DS3 HPFP Upgrade is the highest-flowing single-pump solution in Dorch Engineering's N55 high-pressure fuel pump lineup, designed for BMW N55 engines requiring significantly increased direct-injection fueling capacity.
Known as the Dorch Stage 3 (DS3), this high-performance HPFP was developed through extensive research and development to support some of the highest-powered direct-injection N55 applications. Its larger bore size delivers 20% more fueling capacity than the Dorch Engineering DS25, while maintaining the reliable OEM-style drop-in installation that Dorch Engineering HPFP upgrades are known for.
The DS3 is an ideal solution for N55 builds that have exceeded the fueling capability of the DS25 but do not require the additional cost and installation complexity of the N55 Lift Kit (N55LK) combination.
Fitment
BMW N55 Engine Applications
Designed specifically for BMW N55-powered vehicles and intended as an OEM-style drop-in HPFP upgrade.
The DS3 is suited for N55 applications requiring more fueling capacity than the Dorch Engineering DS25 can provide.
Fuel Flow Capacity
| Fuel Type | Supported Power |
|---|---|
| Gasoline | 825 whp |
| E50 | 700 whp |
| E85 | 600 whp |
Power capability is dependent on the complete fuel system, engine configuration, calibration, fuel pressure requirements, and operating conditions.
Key Features
- Dorch Stage 3 (DS3): Dorch Engineering's highest-flowing single-pump N55 HPFP solution.
- Increased Fueling Capacity: Provides 20% more fueling gains than the Dorch Engineering DS25.
- Large Bore Design: Features Dorch Engineering's largest HPFP bore size to date.
- 825 whp on Gasoline: Supports up to 825 whp according to Dorch Engineering's published specifications.
- 700 whp on E50: Supports up to 700 whp on E50 fuel.
- 600 whp on E85: Supports up to 600 whp on E85 fuel.
- OEM Drop-In Design: Maintains the straightforward installation concept of Dorch Engineering's HPFP upgrades.
- Track-Proven: Developed and tested for high-performance N55 applications.
- Single-Pump Solution: Provides substantial additional fueling capacity without moving to the more complex N55LK combination.
- Alternative to N55LK: Designed for builds that need more fueling than the DS25 while avoiding the additional cost and installation effort of the N55 Lift Kit combination.
Specifications
- Brand: Dorch Engineering
- Product: N55 DS3 HPFP
- Engine Application: BMW N55
- Pump Type: High-Pressure Fuel Pump
- Stage: Dorch Stage 3
- Design: OEM-style drop-in
- Fueling Gain: 20% more than DS25
- Gasoline Capacity: 825 whp
- E50 Capacity: 700 whp
- E85 Capacity: 600 whp
- Configuration: Single HPFP
What's Included
- 1 × Dorch Engineering N55 DS3 High-Pressure Fuel Pump
Installation
The Dorch Engineering DS3 is designed as an OEM-style drop-in HPFP upgrade, allowing increased fueling capacity without the installation complexity associated with a complete N55 lift-pump and HPFP combination.
For vehicles that require more fueling capacity than the DS3 can provide, Dorch Engineering's N55LK combination is the next step in the product lineup.
