Vauxhall Signum 3.0 CDTi 184hp Remap

Name: Vauxhall Signum 3.0 CDTi 184hp ECU Remap
Brand: Vauxhall

Expected gains of +35 BHP and +70 Nm torque

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BHP+35 hp (19%)

Standard

184 hp

Tuned

219 hp

Torque+70 Nm (18%)

Standard

400 Nm

Tuned

470 Nm

Suitability

Good (6.5/10)

Gains Profile

Balanced

Headroom

Medium

Vauxhall Signum 3.0 CDTi 184hp ECU Remapping

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.

How this engine compares

5thof 8 Vauxhall Signum engines by power gain
54%of the 9,842 engines we hold gain data for see a smaller power increase
55%of engines with torque data see a smaller torque increase

Comparisons are calculated from our own recorded Stage 1 figures.

Assessment

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.

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.

Other Signum 2003 - 2008 Engines

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)

Technical Specifications

Fuel Type: Diesel
Aspiration: Turbocharged
Displacement: 3L
Capacity: 2958 CC
Type: Car
Engine Family: Vauxhall 3.0L CDTi Turbo Diesel

ECU & Transmission

Likely ECU Low confidence: Bosch EDC15 / early generation diesel ECU (varies)
Gearbox Low confidence: Transmission varies by trim and market; check manual/automatic type and torque rating. At this torque level, transmission and driveline servicing history becomes especially important.

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Confirm Your Vehicle

MakeVauxhall

ModelSignum

Generation2003 - 2008

Engine3.0 CDTi 184hp

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.