This is an absolutely revolutionary upgrade for the BMW B58 Gen1 platform.
This kit includes a billet-machined exhaust camshaft, fully OEM-spec compatible, but featuring a special high-lift cam lobe designed specifically to increase fuel pump stroke and output.

Because the camshaft profile matches OEM specifications, no valve spring upgrades or special tuning are required.
Simply install this camshaft together with your Dorch HPFP, and you’ll gain up to 40% more fuel flow compared to the HPFP upgrade alone!

Note: Billet camshafts are machined from solid material, not reground OEM units. Reground cams are less durable and less efficient compared to true billet designs.

DS25-250 HPFP Performance Comparison

Important Notes for B58 Gen 1 Engines

The B58 Gen1 engine exists in two variants, depending on production date: Gen1 and Gen1.5.
The cutoff date is August 2017. Please refer to the provided link to verify your version, or simply send us your VIN number — we’ll help you confirm compatibility.

⚠️ At maximum DS25 HPFP output, the B58 fuel system becomes limited by the OEM injectors.
To unleash the full potential of this upgrade, higher-flow injectors are required.

Compatibility

Only compatible with Dorch HPFP systems

• F20/F21 – M140i, M140xi

• F22/F23 – M240i, M240xi

• F30/F31/F34 – 340i, 340xi

• F32/F33/F36 – 440i, 440xi

• G30/G31 – 540i, 540xi

• G32 – 640i, 640xi

• G11/G12 – 740i, 740xi

• G01 – X3 M40i

• G02 – X4 M40i

Compatible up to MY2019 only
Not compatible with B58 engines from 2020+