Mercedes Gl 420 CDI 306
Engine Tuning Fife

Mercedes Gl 420 CDI 306: remap at a glance

• Fuel: Diesel
• Standard power: 306 bhp, remapped: 345 bhp (+39 bhp, +13%)
• Standard torque: 700 Nm, remapped: 785 Nm (+85 Nm, +12%)
• Service: stage 1 ECU remap, fully dyno tested

What a remap does for a diesel Mercedes GL-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.

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

Mercedes Gl 420 CDI 306 against other GL-class engines

Of the 2 diesel GL-class engines in our data, this one comes 2nd for power gain, which is 1 bhp below the GL-class diesel average of 40 bhp.

Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 39 bhp and 85 Nm sits at or above that benchmark.

Book vehicle tuning for your Mercedes GL-class in Fife

Whether you live in Fife or nearby, the Fife Remap Experts site is your local route to a quote. We regularly work with drivers in Glenrothes, Rosyth, Methil, Kirkcaldy and Dunfermline and nearby areas of Scotland.

Every remap is fully dyno tested and comes with a 30 day money back guarantee and a lifetime software warranty. Call 0800 779 7864 for a quote.

If you are closer to Edinburgh, Glasgow and Scotland, those neighbouring Remap Experts sites can help too.