Mercedes S 350 TD(-99)
ECU Remapping in Gwent

Mercedes S 350 TD(-99): remap at a glance

• Fuel: Diesel
• Standard power: 150 bhp, remapped: 185 bhp (+35 bhp, +23%)
• Standard torque: 310 Nm, remapped: 385 Nm (+75 Nm, +24%)
• Service: stage 1 ECU remap, fully dyno tested

How ECU remapping works on a diesel Mercedes S-class

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 Mercedes S 350 TD(-99) compares

Among the 7 diesel S-class engines we have figures for, the S 350 TD(-99) ranks 4th for power gain, 2 bhp below the S-class diesel average of 37 bhp.

Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 35 bhp and 75 Nm sits at or above that benchmark.

Book ECU tuning for your Mercedes S-class in Gwent

Remap Experts Gwent is part of the UK-wide Remap Experts network. We regularly work with drivers in Crumlin, Rassau, Manmoel, Ebbw Vale and Brynmawr 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 Cardiff, Bristol and Midwales, those neighbouring Remap Experts sites can help too.