BMW 5er E39 520d 136
ECU Tuning in Midwales

BMW 5er E39 520d 136: remap at a glance

• Fuel: Diesel
• Standard power: 136 bhp, remapped: 173 bhp (+37 bhp, +27%)
• Standard torque: 280 Nm, remapped: 363 Nm (+83 Nm, +30%)
• Service: stage 1 ECU remap, fully dyno tested

Diesel BMW 5 Series: what changes with a remap

Diesel engines respond strongly to remapping because the ECU controls injection quantity, injection timing and turbo boost pressure. Re-calibrating those maps typically brings the biggest improvement in mid-range torque, which is what you feel when overtaking or towing.

How the BMW 5er E39 520d 136 compares

Among the 17 diesel 5 Series engines we have figures for, the 5er E39 520d 136 ranks 4th for power gain, exactly the 5 Series diesel average.

Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 37 bhp and 83 Nm sits at or above that benchmark.

BMW 5 Series performance tuning in Midwales

Remap Experts Midwales is part of the UK-wide Remap Experts network. We regularly work with drivers in Llanidloes, Welshpool, Newtown, Machynlleth and Llandrindod Wells and nearby areas of Wales.

Each remap is dyno tested before it is signed off, and is protected by a 30 day money back guarantee and a lifetime software warranty. Ask for a quote online or by phone.

If you are closer to Gwent, Cardiff and Chester, those neighbouring Remap Experts sites can help too.