Expected gains of +35 BHP and +70 Nm torque
Get Your Free Quote ↓Considering an ECU remap for your Vauxhall Signum 3.0 CDTi 184hp? A Stage 1 remap can take this 2003 - 2008 diesel engine from 184 BHP to 219 BHP and from 400 Nm to 470 Nm of torque (turbocharged). This engine scores 6.5/10 for remap suitability. Get a free personalised quote from a trusted remap professional and find out exactly what your Vauxhall Signum can achieve.
Comparisons are calculated from our own recorded Stage 1 figures.
The Vauxhall Signum 3.0 CDTi 184hp is a 3.0L turbocharged diesel engine producing 184 BHP and 400 Nm from the factory. With a typical Stage 1 remap, output increases to approximately 219 BHP and 470 Nm — a gain of around 35 BHP (19%) and 70 Nm (18%).
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 |
|---|---|---|---|---|---|
| 1.9 CDTi 100hp | 100 → 140 | +40 | 260 → 330 | +70 | Excellent (8/10) |
| 1.9 CDTi 120hp | 120 → 150 | +30 | 280 → 340 | +60 | Good (7.5/10) |
| 1.9 CDTi 150hp | 150 → 190 | +40 | 320 → 400 | +80 | Good (7.5/10) |
| 2.2i 16v 155hp | 155 → 165 | +10 | 220 → 235 | +15 | Moderate (4/10) |
| 2.0 Turbo 170hp | 170 → 200 | +30 | 265 → 310 | +45 | Good (7/10) |
| 2.8 Turbo 230hp | 230 → 270 | +40 | 330 → 390 | +60 | Good (7/10) |
| 2.8 Turbo 250hp | 250 → 290 | +40 | 340 → 400 | +60 | Good (7/10) |
Get a personalised remap quote for your Vauxhall Signum. 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.