Vauxhall Signum 2004-2008 2.2 16v 152bhp remap figures
Thinking of remapping a Vauxhall Signum 2.2 16v 152bhp? The standard car makes 152bhp and 220Nm; with a Stage 1 remap from our Leicester workshop we expect around 169bhp and 238Nm, up to +17bhp and +18Nm.
Choose your map
Stage 1 remap figures
A Stage 1 remap is a software-only change to the ECU on an otherwise standard car. It needs no extra parts, which makes it the usual starting point.
| Stock | Vanguard expected | Expected gain, up to | |
|---|---|---|---|
| Power | 152 bhp | 169 bhp | +17 bhp |
| Torque | 220 Nm | 238 Nm | +18 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 152 bhp | 220 Nm | |
| Stage 1Maximum software-only performance | 169 bhp | 238 Nm | +17 bhp +18 Nm |
| Stage 1 EcoPerformance with economy in mind | 165 bhp | 237 Nm | +13 bhp +17 Nm |
| Eco mapEconomy first | 163 bhp | 236 Nm | +11 bhp +16 Nm |
Who is the Stage 1 map for?
- Drivers who want a sharper throttle and a small, honest gain from software alone.
- Owners who would rather keep the car standard in every other way.
- Anyone who wants the fullest software-only map for this engine, accepting that the gain is modest without a turbocharger.
What this means for your Signum
Without a turbocharger the improvement comes from ignition, fuelling and throttle mapping rather than boost, so expect a smaller but still noticeable change in response.
This car is listed with a Siemens Simtec 81.1 engine control unit. Older engine management is simpler to work with, but age matters: worn sensors, leaks and tired components can hold back what a remap delivers, which is why we run a diagnostic check first.
We remap at our Belgrave Gate workshop in Leicester, or at your home or work within 30 miles, and every job starts with a diagnostic check.
Please note: these are expected figures, not guarantees. Real results vary with the condition of the vehicle, the ECU software version, fuel quality and the hardware fitted. Some options - including Stage 2 and anything that needs extra hardware - are for off-road or competition use only. We check every vehicle first and confirm what is achievable before any work starts.
Figures reviewed 22 October 2026.
Stage 1 questions
How much power does the Stage 1 map give the Vauxhall Signum 2.2 16v 152bhp?
We expect 169bhp and 238Nm against 152bhp and 220Nm as standard: up to +17bhp and +18Nm. These are expected figures, and we confirm what is achievable on your own car after a diagnostic check.
Does a Stage 1 remap need any extra parts on the Vauxhall Signum 2.2 16v 152bhp?
No. Stage 1 is a software-only change to the ECU on an otherwise standard car.
Is there a gentler map than Stage 1 for this engine?
Yes, two. Stage 1 Eco is performance with economy in mind: 165bhp and 237Nm expected. The Eco map is economy first: 163bhp and 236Nm. Both still sit above the standard 152bhp and 220Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.
More Vauxhall Signum figures
Other petrol variants
All petrol Signum variants · Signum 2004-2008 overview · All Vauxhall figures