DORCH | B58 Gen 1 HPFP Upgrade DS25 / DS3 (Stage 2.5 / Stage 3)

High-Performance HPFP Upgrade for BMW B58 Gen 1

Upgrade your fueling system with the Dorch DS25 (Stage 2.5) and DS3 (Stage 3) High Pressure Fuel Pump (HPFP) upgrades, engineered specifically for BMW B58 Gen 1 engines. Designed by the pioneers of B58 direct-injection fueling, these pumps deliver massive flow increases, OEM-level integration, and proven reliability for high-performance builds.

Whether you're running a hybrid turbo street setup or a full big turbo build, Dorch HPFP upgrades eliminate fueling limitations and unlock the full potential of your B58.

🚀 Why Upgrade Your B58 Gen 1 HPFP?

The factory HPFP quickly becomes a restriction when increasing boost or running ethanol blends. Upgrading to a high-performance HPFP allows you to:

• Support 750–1150+ WHP builds
• Safely run E50 / E85 fuel mixtures
• Maintain consistent rail pressure under load
• Maximize performance of larger turbos & upgraded injectors
• Retain OEM drivability and DME safety controls

⚙️ DS25 vs DS3 – Key Differences

🔧 DS25 (Stage 2.5) – Optimized Performance & Reliability

• Up to 750whp (gas) / 550whp (E85)
• With 40% cam upgrade: 1000whp (gas) / 770whp (E85)
• Operates efficiently at 250 bar
• Perfect for hybrid turbo and aggressive street builds
• Designed to maximize performance of upgraded DI injectors

🔥 DS3 (Stage 3) – Maximum Fueling Capacity

• Up to 860whp (gas) / 630whp (E85)
• With 40% cam upgrade: 1150whp (gas) / 870whp (E85)
• ~20% more flow than DS25
• Ideal for big turbo & high ethanol setups
• Built for extreme horsepower goals

👉 Summary:

• DS25 = Best balance of power, efficiency, and reliability
• DS3 = Maximum flow for high-end, big turbo builds

🧠 Redesigned for Maximum Efficiency

The DS25 and DS3 feature a complete internal redesign, including:

• Optimized pressure chamber design
• Revised spring rates & plunger geometry
• Increased volumetric efficiency
• Stable operation up to 250 bar

Result: higher flow, improved reliability, and consistent fueling under extreme conditions.

🔌 True Plug & Play OEM Fitment

Dorch HPFP upgrades are engineered for seamless installation and factory-level integration:

• ✅ No cutting, bending, or modification required
• ✅ OEM-style hose routing (no interference with maintenance)
• ✅ Includes 250 bar high-pressure fuel line
• ✅ Full DME control retained

This is a true drop-in solution, just like the OEM pump—but significantly more capable.

💻 Tuning Requirements

Software calibration is required to run upgraded HPFPs:

• Compatible with Bootmod3, MHD, and MG Flasher
• Simply enable HPFP upgrade option when flashing
• Custom tuning support via .BIN file submission to tuning@dorchengineering.com for the appropriate software implementation via WinOLS

🛡️ Why Choose Dorch Engineering?

• Lifetime Warranty – Proven long-term reliability
• 24/7 Customer Support – Direct access to engineers & tuners
• In-House Calibration Expertise – OEM-level development
• Global Tuning Support Network

📦 What’s Included

• Dorch DS25 or DS3 HPFP with hardware
• 250 bar high-pressure fuel line
• PTFE low-pressure line
• Low-pressure hose bracket
• Plug & play adapter harness

🚗 Vehicle Compatibility (B58 Gen 1 Only)

Compatible with BMW B58 Gen 1 models (up to 2019):

• F20/F21 – M140i / M140xi
• F22/F23 – M240i / M240xi
• F30/F31/F34 – 340i / 340xi
• F32/F33/F36 – 440i / 440xi
• G30/G31 – 540i / 540xi*
• G11/G12 – 740i / 740xi*
• G01/G02 – X3/X4 M40i*

(Select early Gen 1 models only)

⚠️ Not compatible with B58 Gen 2 engines

🏁 Built for Power. Engineered to Last.

From daily-driven performance builds to full race setups, the Dorch DS25 and DS3 HPFP upgrades for B58 Gen 1 provide the fueling capacity needed to safely achieve your horsepower goals.

More fuel. More power. Zero compromises.