BMW E-Series Diesel CP3 R90 HPFP Upgrade - Common Rail Injection Pump Conversion (R70 Replacement) - Fits E90 E91 E92 E93, E60 E61, E70 X5, E46 E83 E87 - M47N M47N2 M57N2 - Uprated Rail Pump for Remap, Stage 2 & Hybrid Turbos

Uprated CP3 R90 Rail Pump for BMW E‑Series Diesel Tuning

Unlock dependable fueling and extra headroom for your remap with this CP3 R90 rail pump upgrade. Designed as a direct-fit swap for the smaller factory unit on E‑series diesel models, it delivers a big step up in flow while keeping rail stability rock solid at higher engine speeds and under sustained load. Ideal for fast road, track, towing and hybrid turbo builds on M47N, M47N2 and M57N2 platforms.

We run this conversion on our own projects and customer cars, and the difference is clear: steadier rail pressure, sharper response and consistent power when you lean on it. If you are building a reliable performance diesel, this is the fueling solution you want.

Key reasons to choose this upgrade

• Direct-fit replacement for vehicles originally equipped with the smaller OE common-rail pump
• Higher delivery capacity for tuned setups and sustained high load driving
• CP3 3‑piston architecture for smooth, consistent rail control across the rev range
• Helps prevent pressure drop and limp issues on aggressively mapped cars
• Supports raised rail targets when calibrated correctly and paired with suitable injectors
• Perfect for remapped, hybrid turbo, fast road and track-focused diesel builds
• Rebuilt in the UK and supplied with a 12 month warranty

Technical highlights

• Approx 2200 bar capability with appropriate injectors and correct calibration
• Plug-and-play format for a straightforward swap with OE fittings
• Delivers consistent fueling for improved drivability and reliable performance

Compatible models

Engines: M47N, M47N2, M57N2

Chassis and series coverage includes many E‑series diesels using the smaller stock pump, including but not limited to: E46, E60, E60N, E61, E61N, E63N, E64N, E65, E66, E70, E70N, E71, E83, E83N, E87, E90, E90N, E91, E91N, E92, E92N, E93. This upgrade is a popular choice for 3 Series, 5 Series and X5 diesel applications seeking stronger fueling.

What you will notice

• More dependable fueling on tuned E‑series diesels
• Improved performance at high RPM and sustained load
• Confidence from a UK‑rebuilt unit with a 12 month warranty

Fitting and calibration

Professional installation and mapping are recommended to extract the most from this upgrade. For fitting and setup, contact MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

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