Dorch DS15 HPFP Upgrade | BMW N55
Dorch Engineering introduces a new generation of high-pressure fuel pumps for BMW N55 engines. The previously known "Dorch Stage 1" (DS1) has been replaced by the completely redesigned DS15 model – a so-called Stage 1.5 level. This pump has been re-engineered from the ground up for maximum performance, reliability, and ease of installation.
Technical Specifications (DS15-250)
- Performance improvement: up to +38–49% (N55LK)
- Maximum flow (gasoline): 550–750 whp
- Maximum flow (E85): 400–610 whp
- Operating pressure: up to 250 bar
Key Features
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Completely Redesigned Structure: Improved pressure chamber, suspension, piston stroke, and optimized volumetric efficiency
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Improved Installability: New external design facilitates hose routing
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250 bar Capacity: Enables significantly higher fuel flow, especially in tuned engines
Plug & Play Installation
The DS15 is a complete plug-and-play solution that installs directly in place of the original pump without modifications:
- No cutting, bending, or crimping
- Full compatibility with the car's original DME control
- Retains all OEM safety and control features
Note: The pump requires a software update. With MHD or Bootmod3 software, simply select the pump during flashing. Otherwise, the .BIN file must be sent to the appropriate developer.
Package Contents
- Dorch HPFP pump + mounting hardware
- High-pressure fuel line
- Low-pressure hose
- Low-pressure hose clamp
- Plug & Play adapter wire
- Lifetime warranty
Compatibility
Fits various BMW N55 models, including:
- 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