Every turbocharged engine eventually reaches the same limitation.

Not airflow.

Not boost.

Fuel delivery.

As horsepower increases, the factory fuel system becomes one of the most important factors determining how far an engine can safely and reliably be pushed. Dorch Engineering specializes in solving that challenge by developing complete direct-injection fueling solutions for modern BMW engines and the Toyota GR Supra. Rather than focusing on a single component, the company engineers products that allow the entire fueling system to grow alongside increasingly demanding performance builds.

Fueling Is a System, Not a Single Upgrade

Adding a larger high-pressure fuel pump is only part of the equation.

Injector capacity, fuel pressure, ethanol compatibility, and camshaft lift all influence how much fuel reaches the combustion chamber.

Dorch Engineering develops complementary products that work together, giving enthusiasts the flexibility to build a fueling package that matches their power goals while maintaining OEM-style integration whenever possible.

Product Categories

Dorch Engineering manufactures a comprehensive lineup of fueling upgrades, including:

• High-pressure fuel pump (HPFP) upgrades
• High-flow direct injectors
• Flex Fuel (ECA) kits
• Camshaft lift kits
• High-pressure fuel lines
• Low-pressure fuel lines
• Plug-and-play adapter harnesses
• Complete fueling packages
• Supporting fuel system hardware

Many components are designed to work together, allowing owners to upgrade individual systems or install complete fueling packages depending on the application.

Vehicle Applications

Dorch Engineering primarily supports modern BMW turbocharged engines and their related platforms.

Applications include:

• BMW B58 Gen 1
• BMW B58 Gen 2
• BMW S58
• BMW N55
• BMW S55

Supported vehicles include numerous BMW M Performance and M models, as well as the Toyota GR Supra A90/A91 powered by the B58 engine.

Designed for OEM-Style Integration

One characteristic that distinguishes Dorch Engineering products is their emphasis on direct installation.

Many HPFP upgrades retain OEM hose routing and plug-and-play fitment, reducing installation complexity while preserving serviceability. Factory-style integration also allows continued use of OEM engine management strategies with the appropriate software calibration, making the upgrades suitable for both street-driven and dedicated performance vehicles.

Built to Support Future Growth

Performance builds rarely stop after one modification.

Additional boost, ethanol blends, upgraded turbochargers, and larger injectors all increase fuel demand.

Dorch Engineering develops its fueling solutions with future expansion in mind, allowing enthusiasts to progress from moderate bolt-on combinations to high-horsepower engine builds while continuing to use compatible components throughout the vehicle's evolution. This scalable philosophy has made the brand a trusted name within the BMW performance community.

Explore Dorch Engineering at XPH

At XPH, we offer a complete selection of genuine Dorch Engineering products, including HPFP upgrades, injectors, Flex Fuel kits, cam lift kits, fueling packages, and supporting hardware for BMW B58, S58, N55, S55, and Toyota GR Supra performance builds.

Shop Dorch Engineering at XPH: https://x-ph.com/dorch-engineering/