Vauxhall Astra (H) 2007-2010 1.9 CDTi 150bhp remap figures
Thinking of remapping a Vauxhall Astra 1.9 CDTi 150bhp? The standard car makes 150bhp and 320Nm; with a Stage 1 remap from our Leicester workshop we expect around 214bhp and 419Nm, up to +64bhp and +99Nm.
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 | 150 bhp | 214 bhp | +64 bhp |
| Torque | 320 Nm | 419 Nm | +99 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 150 bhp | 320 Nm | |
| Stage 1Maximum software-only performance | 214 bhp | 419 Nm | +64 bhp +99 Nm |
| Stage 1 EcoPerformance with economy in mind | 198 bhp | 411 Nm | +48 bhp +91 Nm |
| Eco mapEconomy first | 193 bhp | 406 Nm | +43 bhp +86 Nm |
Who is the Stage 1 map for?
- Drivers who want stronger pulling power for overtaking, hills and towing, with no parts to fit.
- Daily and motorway drivers who want the engine to feel less strained at cruising speed.
- Anyone who wants the biggest software-only change we list for this engine.
What this means for your Astra
Diesel remaps work mainly on boost pressure, fuel delivery and torque limiters, which is why the Nm gain is usually the figure you feel in everyday driving, particularly when overtaking or towing.
The ECU recorded for this variant is a Bosch EDC16C39. We read the ECU on your car and compare it with the software listed here before any work starts, so you know what to expect before you commit.
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 Astra 1.9 CDTi 150bhp?
We expect 214bhp and 419Nm against 150bhp and 320Nm as standard: up to +64bhp and +99Nm. 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 Astra 1.9 CDTi 150bhp?
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: 198bhp and 411Nm expected. The Eco map is economy first: 193bhp and 406Nm. Both still sit above the standard 150bhp and 320Nm.
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 Astra figures
Other diesel variants
- 1.9 CDTi 150bhp 2004-2006
- 1.9 CDTi 120bhp 2004-2006
- 1.9 CDTi 120bhp 2007-2010
- 1.7 CDTi 108bhp 2004-2010
- 1.7 CDTi 98bhp 2004-2010
- 1.3 CDTi 88bhp 2004-2010
- 1.7 CDTi 79bhp 2004-2010
All diesel Astra (H) variants · Astra (H) 2004-2010 overview · All Vauxhall figures