Considering an ECU remap for your Volvo Trucks FH 12 420hp? A Stage 1 remap can take this Euro 3 Euro 4 -->2006 diesel engine from 420 BHP to 500 BHP and from 2000 Nm to 2450 Nm of torque (turbocharged). This engine scores 7.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Volvo Trucks FH can achieve.
The Volvo Trucks FH 12 420hp is a turbocharged diesel engine producing 420 BHP and 2000 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 500 BHP and 2450 Nm — a gain of around 80 BHP (19%) and 450 Nm (22%).
This engine scores highly for 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 high, 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 |
|---|---|---|---|---|---|
| 12 380hp | 380 → 450 |
| +70 |
| 1850 → 2200 |
| +350 |
| Good (6.5/10) |
| 13 400hp Euro4 | 400 → 475 | +75 | 2000 → 2375 | +375 | Good (6.5/10) |
| 13 440hp Euro4 | 440 → 520 | +80 | 2200 → 2575 | +375 | Good (6.5/10) |
| 12 460hp | 460 → 550 | +90 | 2200 → 2650 | +450 | Good (7.5/10) |
| 13 480hp Euro4 | 480 → 550 | +70 | 2400 → 2775 | +375 | Good (6.5/10) |
| 12 500hp | 500 → 595 | +95 | 2400 → 2800 | +400 | Good (6.5/10) |
| 13 520hp Euro4 | 520 → 600 | +80 | 2500 → 2875 | +375 | Good (6.5/10) |
| 16 550hp Euro3 | 550 → 640 | +90 | 2500 → 2900 | +400 | Good (6.5/10) |
| 16 580hp Euro3 | 580 → 660 | +80 | 2800 → 3150 | +350 | Good (6/10) |
| 16 610hp Euro3 | 610 → 700 | +90 | 2800 → 3230 | +430 | Good (6.5/10) |
| 16 660hp Euro3 | 660 → 740 | +80 | 3100 → 3450 | +350 | Good (6/10) |
Get a personalised remap quote for your Volvo Trucks FH. 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.
