Mercedes S-class S 420 CDI 320(+05)
ECU Tuning in Berkshire

Mercedes S-class S 420 CDI 320(+05) power and torque after remapping

• Fuel: Diesel
• Standard power: 320 bhp, remapped: 370 bhp (+50 bhp, +16%)
• Standard torque: 730 Nm, remapped: 835 Nm (+105 Nm, +14%)
• Service: stage 1 ECU remap, fully dyno tested

Diesel Mercedes S-class: what changes with a remap

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-class S 420 CDI 320(+05) compares

Ranked by power gain against the other diesel S-class engines (7 in total), the S 420 CDI 320(+05) is 1st, 13 bhp above 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 50 bhp and 105 Nm sits at or above that benchmark.

Book performance tuning for your Mercedes S-class in Berkshire

Remap Experts has a dedicated Berkshire site, so you deal with a local team backed by a national network. We regularly work with drivers in Slough, Windsor, Twyford, Thatcham and Sandhurst and nearby areas of the South East.

All our remaps are fully dyno tested, backed by a 30 day money back guarantee and covered by a lifetime software warranty. Request a quote online or call 0800 779 7864.

If you are closer to Surrey, Basingstoke and Milton Keynes, those neighbouring Remap Experts sites can help too.