Mercedes Gl 420 CDI 306
ECU Remapping
Mercedes Gl 420 CDI 306. Standard and remapped figures for this exact engine.
- Fully dyno tested remaps
- 30 day money back guarantee
- Lifetime software warranty
- UK-wide local network
Remap stats
Mercedes Gl 420 CDI 306: standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+39 bhp · +13%- Standard306 bhp
- Remapped345 bhp
Torque
+85 Nm · +12%- Standard700 Nm
- Remapped785 Nm
Tuning figures are indicative estimates, not guaranteed results. Actual results depend on the condition of the vehicle.
Prices from £130
Fully dyno tested | 30 day money back guarantee | Lifetime software warranty
What does a remap do for the Mercedes Gl 420 CDI 306? Our figures show power up from 306 to 345 bhp (+13%) and torque up from 700 to 785 Nm (+12%), a stage 1 result you can book across the UK.
Treat the numbers as a guide: they are stage 1 estimates for a diesel Mercedes GL-class in sound condition, and individual cars differ.
Mercedes Gl 420 CDI 306 remap figures
- 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
Diesel Mercedes GL-class: what changes with a remap
Nothing is bolted on in a diesel remap. The ECU's stored maps for injection quantity, rail pressure and turbo boost are rewritten within safe limits, and because diesels make power through torque, that is where the improvement is most obvious.
For reference, CDI is the Mercedes-Benz name for its common-rail diesel engines.
Mercedes Gl 420 CDI 306 against other GL-class engines
Ranked by power gain against the other diesel GL-class engines (2 in total), the Gl 420 CDI 306 is 2nd, 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 performance tuning for your Mercedes GL-class
Our network covers the whole of the UK through local Remap Experts sites. Find your area to get a quote from a specialist near you.
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.
Ready for ECU remapping on your Mercedes GL-class?
Send your details and a specialist will confirm what is possible for your engine.
Included
What we can do for your Mercedes GL-class
Stage 1 ECU remap
Add power and torque and improve driveability. Software only, tailored to your engine.
ECU repair and testing
Is your engine control unit playing up? We can arrange testing and repair, and source replacement ECUs.
DPF and EGR fault repair
Persistent DPF or EGR errors diagnosed and resolved in accordance with all current road-legal standards.
Engine carbon cleaning
Fault finding and carbon cleaning for the inside of your engine, typically completed in a couple of hours.
Same model
Other GL-class engines
From quote to remapped in four steps
No jargon and no pressure. Here is exactly what happens.
- 01
Find your vehicle
Choose your make, model and engine to see the standard and remapped power and torque for your car.
- 02
Request a quote
Send your details and we contact you by SMS or call back with a quote. No obligation.
- 03
Book with your local site
Your local Remap Experts site arranges the remap and answers any questions about your car.
- 04
Remapped and dyno tested
Your remap is fully dyno tested, with a 30 day money back guarantee and a lifetime software warranty.
Everything you need to know
Plain-English guides to how remapping works, what it does and what to check first.
- 6 min read
What is ECU remapping?
The engine control unit, what a remap changes, and who it suits.
Read guide - 5 min read
The benefits of ECU remapping
More torque, better driveability and the potential for better economy.
Read guide - 6 min read
How ECU remapping works, step by step
From reading the original software to the dyno test.
Read guide