Mercedes S 400 CDI 279(+99)
ECU Remapping in Crawley

Mercedes S 400 CDI 279(+99) power and torque after remapping

• Fuel: Diesel
• Standard power: 279 bhp, remapped: 306 bhp (+27 bhp, +10%)
• Standard torque: 400 Nm, remapped: 437 Nm (+37 Nm, +9%)
• Service: stage 1 ECU remap, fully dyno tested

How ECU remapping works on a diesel Mercedes S-class

Modern diesels are held back by conservative factory calibrations. A remap updates the fuel and boost maps stored in the ECU, which is why drivers notice stronger acceleration from low revs and less need to change down on hills or when loaded.

For reference, CDI is the Mercedes-Benz name for its common-rail diesel engines.

How the Mercedes S 400 CDI 279(+99) compares

Among the 7 diesel S-class engines we have figures for, the S 400 CDI 279(+99) ranks 7th for power gain, 10 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 27 bhp and 37 Nm sits below that benchmark.

Mercedes S-class vehicle tuning in Crawley

Remap Experts Crawley is part of the UK-wide Remap Experts network. We regularly work with drivers in Sevenoaks, Tonbridge, Swanley, Sidcup and Ortington and nearby areas of the South East.

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 Sussex, Surrey and Croydon, those neighbouring Remap Experts sites can help too.