Power is easy to make.

Supplying enough fuel to support it is where the real engineering begins.

As today's turbocharged BMW engines continue to push well beyond factory output, fuel delivery has become one of the most important components of a successful performance build. Dorch Engineering specializes in direct-injection fueling solutions that allow enthusiasts to unlock higher horsepower while maintaining OEM-level integration and reliability.

Fueling That Grows With the Build

Every performance build eventually reaches the same question:

Can the factory fuel system keep up?

Whether you're adding ethanol, increasing boost, or upgrading the turbocharger, additional airflow demands additional fuel. Dorch Engineering develops complete fueling solutions that help eliminate one of the most common bottlenecks in modern direct-injection BMW engines, giving tuners and enthusiasts the confidence to continue building without compromising fuel delivery.

Product Categories

Dorch Engineering offers a growing lineup of fueling solutions, including:

• High-Pressure Fuel Pump (HPFP) Upgrades
• DS15 High-Pressure Fuel Pumps
• DS25 High-Pressure Fuel Pumps
• DS3 High-Pressure Fuel Pumps
• HPFP Lift Kits
• High-pressure fuel lines
• Low-pressure fuel lines
• Plug-and-play adapter harnesses
• Ethanol-compatible fueling components
• Fueling accessories and installation hardware

Every system is engineered as a direct-fit upgrade with OEM-style installation and is supported by vehicle-specific tuning solutions.

Vehicle Applications

Dorch Engineering develops fueling solutions for many of BMW's most popular turbocharged engine platforms, including:

B58

Supporting numerous Gen 1 and Gen 2 applications, including:

• M240i
• M340i
• M440i
• 340i
• 440i
• 540i
• 740i
• 840i
• Z4 M40i
• X3 M40i
• X4 M40i
• X5 40i
• X6 40i
• X7 40i
• Toyota GR Supra (A90/A91)

N55

Applications include:

• M2
• 135i
• 235i
• 335i
• 435i
• 535i
• X1 35i
• X3 35i
• X4 35i
• X5 35i
• X6 35i

Additional BMW Platforms

Dorch Engineering also continues developing fueling solutions for S55, S58, and additional modern BMW performance engines as the catalog continues to expand. Product availability varies by engine family and model year.

Built Around Reliability as Much as Performance

Increasing fuel capacity isn't simply about achieving a bigger dyno number.

Consistent fuel pressure helps maintain stable engine operation, supports advanced tuning strategies, and provides the headroom needed as performance goals continue to grow.

That's why Dorch Engineering designs its products around factory-style integration, direct-fit installation, and long-term durability—making them a trusted choice for enthusiasts building everything from responsive street cars to high-horsepower ethanol-powered setups.

Explore Dorch Engineering at XPH

At XPH, we offer Dorch Engineering fueling solutions for enthusiasts looking to strengthen the foundation of their BMW build with premium high-pressure fuel system upgrades engineered for serious performance.

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