Dorch Engineering DS15 HPFP Upgrade - N55

Product Details

If you're extracting serious performance out of your N55, you already know that the stock high-pressure fuel pump is the weak link in the chain. Eliminate the fueling limits and maintain factory-level reliability with the Dorch Engineering DS15 HPFP Upgrade. This "Stage 1.5" pump replaces the successful DS1, engineered specifically to handle the flow demands of aggressive tuning and track abuse without breaking a sweat. Dorch has re-worked the internal plunger depth, pressure chamber, and spring rates to maximize volumetric efficiency, resulting in a pump capable of handling a massive 250 Bar of pressure. Crucially for racers and DIYers alike, the external package has been optimized for cleaner hose routing and a flawless, factory-style installation. It integrates perfectly with the stock DME, ensuring that your engine management retains all original safety parameters.

Key Features

• Eliminates the factory HPFP bottleneck to support up to 550whp on gasoline and 400whp on E85.

• Direct-fit architecture requires zero modification, bending, or custom fabrication to your BMW's factory plumbing.

• Works seamlessly with the stock DME to retain all factory engine safety and monitoring systems.

• Re-engineered external body allows for superior hose routing and simplified installation clearances.

• Easily calibrated via standard check-box options in MHD and Bootmod3 flashing software.

• Built to endure, backed by Dorch Engineering's comprehensive lifetime warranty.

Specifications

• Maximum Operating Pressure: 250 Bar

• Internal Enhancements: Re-engineered pressure chamber, optimized volumetric efficiency, and adjusted spring rates

• Application: Fitment for 2013+ N55 BMW models utilizing the factory Bosch HPFP setup

• Included Lines: 250 Bar-rated high-pressure hardline, low-pressure line, and low-pressure line bracket

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Lifetime Replacement

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