Considering an ECU remap for your Mercedes-Benz E 420 CDI 314hp? A Stage 1 remap can take this W211 - 2002 - 2006 diesel engine from 314 BHP to 354 BHP and from 730 Nm to 810 Nm of torque (turbocharged). This engine scores 6/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Mercedes-Benz E can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Mercedes-Benz E 420 CDI 314hp is a 4.0L turbocharged diesel engine producing 314 BHP and 730 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 354 BHP and 810 Nm — a gain of around 40 BHP (13%) and 80 Nm (11%).
This engine has moderate remap suitability, with a balanced spread of gains across both power and torque — providing a noticeable improvement across the rev range. The tuning headroom is classified as moderate, based on the percentage gain available from the factory output.
Considerations: High tuned torque: check transmission torque capacity and service history.. Older diesel: injector, turbo and intake condition can affect results; ensure maintenance is up to date.
Fuel economy note: possible improvement with conservative driving.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method. We recommend discussing your specific vehicle with a qualified remap professional.
| Engine | BHP | Gain | Torque | Gain | Score |
|---|---|---|---|---|---|
| 200 CDI 122hp | 122 → 170 | +48 | 270 → 370 | +100 | Excellent (8/10) |
| 220 CDI 136hp | 136 → 170 | +34 | 315 → 400 | +85 | Good (7.5/10) |
| 220 CDI 150hp | 150 → 175 | +25 | 340 → 400 | +60 | Good (7/10) |
| 200 K 163hp | 163 → 200 | +37 | 240 → 280 | +40 | Moderate (5/10) |
| 240 V6 - 170hp | 170 → 190 | +20 | 240 → 255 | +15 | Moderate (4/10) |
| 270 CDI 177hp | 177 → 210 | +33 | 400 → 480 | +80 | Good (6.5/10) |
| 280 CDI 177hp | 177 → 240 | +63 | 425 → 570 | +145 | Excellent (8/10) |
| 280 CDI 190hp | 190 → 260 | +70 | 400 → 600 | +200 | Excellent (8/10) |
| 320 CDI 204hp | 204 → 240 | +36 | 500 → 570 | +70 | Good (6.5/10) |
| 320 CDI 211hp | 211 → 260 | +49 | 510 → 600 | +90 | Good (7.5/10) |
| 320 CDI 224hp | 224 → 260 | +36 | 510 → 600 | +90 | Good (6.5/10) |
| 400 CDI 260hp | 260 → 300 | +40 | 560 → 630 | +70 | Good (6/10) |
| 500 306hp | 306 → 326 | +20 | 460 → 485 | +25 | Limited (3.5/10) |
| E 55 AMG 476hp | 476 → 515 | +39 | 700 → 800 | +100 | Moderate (4.5/10) |
Get a personalised remap quote for your Mercedes-Benz E. We'll connect you with a trusted professional in your area.
All figures shown are typical estimates based on aggregated Stage 1 data for this engine variant. Actual results depend on vehicle condition, mileage, and the chosen tuning method.
We recommend discussing your specific vehicle with a qualified remap professional before proceeding.
