Dorch DS25 HPFP Upgrade | BMW N55
Welcome to the world of peak performance for direct-injected N55 engines. The Dorch DS25 represents the most powerful and high-performing high-pressure fuel pump on the market – designed for demanding tuning applications aiming for maximum power and flow capacity. If your goals exceed the capacity of a single pump, the DS25 can be combined with Dorch's N55LK solution for even greater performance.
The DS25 replaces the previous "Dorch Stage 2" (DS2) pump and raises the bar to a new level. This completely redesigned Stage 2.5 pump offers improved flow efficiency, higher operating pressure, and even better reliability.
Technical Specifications (DS25-250)
- Performance increase: up to +38–49 % (N55LK)
- Max flow (gasoline): 750–1000 whp
- Max flow (E85): 550–770 whp
- Operating pressure: up to 250 bar
Key Features
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Completely redesigned structure: Optimized pressure chamber, spring, piston travel, and volumetric efficiency
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Class-leading flow: The highest-flowing N55 HPFP on the market – now even more powerful
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250 bar operating pressure: Maximizes direct injection injector capacity
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Improved installation: New design facilitates hose routing and speeds up installation
Plug & Play Installation
Like its predecessor, the DS25 is completely plug-and-play:
- No cutting, bending, or modifications
- Direct OEM compatibility
- Full DME control like the original pump
- All factory safety and control functions are retained
Note: The pump requires a software update for operation.
- MHD / Bootmod3: select pump upgrade during flashing
- Other solutions: send .BIN file to a knowledgeable tuner.
Package Contents
- Dorch HPFP pump + mounting hardware
- Dorch high-pressure fuel line
- PTFE low-pressure hose
- Plug & Play adapter harness
- Lifetime warranty
Compatibility
Suitable for several BMW models equipped with the N55 engine:
- F87 M2
- F20/21 135i / 135xi
- F22/23 235i / 235xi
- F30/31/34 335i / 335xi
- F32/33/36 435i / 435xi
- F10/11 535i / 535xi*
- F25/26 X3/X4 35i*
- F15/16 X5/X6 35i
- E-series models (135i, 335i, X1, X5, X6)*
* Only 2013+ models with original Bosch HPFP
❌ Not compatible with 2011–2012 N55 engines