Mercedes E 420 CDI 314(+06)
ECU Tuning in Belfast
Mercedes E 420 CDI 314(+06) in Belfast. 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 E 420 CDI 314(+06): standard vs remapped
Diesel engine. Indicative stage 1 figures, fully dyno tested.
Power
+37 bhp · +12%- Standard314 bhp
- Remapped351 bhp
Torque
+80 Nm · +11%- Standard730 Nm
- Remapped810 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
Out of the box the Mercedes E 420 CDI 314(+06) gives 314 bhp and 730 Nm. Remapped in Belfast, we record 351 bhp and 810 Nm, so 37 bhp and 80 Nm more, or 12% and 11% respectively.
These are indicative figures for a diesel Mercedes E-class in good health. Your own results depend on the condition of the car.
Mercedes E 420 CDI 314(+06): remap at a glance
- Fuel: Diesel
- Standard power: 314 bhp, remapped: 351 bhp (+37 bhp, +12%)
- Standard torque: 730 Nm, remapped: 810 Nm (+80 Nm, +11%)
- Service: stage 1 ECU remap, fully dyno tested
What a remap does for a diesel Mercedes E-class
The gains from remapping a diesel come from the engine management software rather than new parts: injection, boost and torque limits are re-mapped, which is why torque improves most and why the car often feels easier to drive at lower revs.
For reference, CDI is the Mercedes-Benz name for its common-rail diesel engines.
How the Mercedes E 420 CDI 314(+06) compares
Among the 18 diesel E-class engines we have figures for, the E 420 CDI 314(+06) ranks 9th for power gain, 1 bhp above the E-class diesel average of 36 bhp.
Across our whole catalogue the average diesel remap adds 34 bhp and 73 Nm, so this engine's 37 bhp and 80 Nm sits at or above that benchmark.
Remapping your Mercedes E-class in Belfast
Remap Experts has a dedicated Belfast site, so you deal with a local team backed by a national network. We regularly work with drivers in Holywood, Newtownabbey, Millisle, Lisburn and Dunmurry and nearby areas of Northern Ireland.
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 Glasgow, Scotland and Carlisle, those neighbouring Remap Experts sites can help too.

Get a quote for your Mercedes E 420 CDI 314(+06)
Send your registration and we will confirm the exact remap, the price and the next available slot.
Included
What we can do for your Mercedes E-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 E-class engines
- Mercedes E 200 CDI 102 BIS 99(+97)diesel
- Mercedes E 200 CDI 115 Ab 00(+97)diesel
- Mercedes E 200 CDI 122 Ab 03(+02)diesel
- Mercedes E 200 CDI 136(+06)diesel
- Mercedes E 200 Kompressor 163(+02)petrol
- Mercedes E 200 Kompressor 184(+06)petrol
- Mercedes E 200i 136(+97)petrol
- Mercedes E 220 CDI 125 BIS 99(+97)diesel
- Mercedes E 220 CDI 143 Ab 00(+97)diesel
- Mercedes E 220 CDI 150 Ab 03(+02)diesel
- Mercedes E 220 CDI 170(+06)diesel
- Mercedes E 230 150(-97)petrol
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