Vauxhall Astra Van (H) 2004-2010 1.7 CDTi 98bhp remap figures
The Vauxhall Astra Van 1.7 CDTi 98bhp (2004-2010) is a diesel 1.7L model making 98bhp and 240Nm as standard. After a Stage 1 ECU remap we expect 149bhp and 310Nm - up to 51bhp and 70Nm more than stock.
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 | 98 bhp | 149 bhp | +51 bhp |
| Torque | 240 Nm | 310 Nm | +70 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 98 bhp | 240 Nm | |
| Stage 1Maximum software-only performance | 149 bhp | 310 Nm | +51 bhp +70 Nm |
| Stage 1 EcoPerformance with economy in mind | 136 bhp | 304 Nm | +38 bhp +64 Nm |
| Eco mapEconomy first | 132 bhp | 301 Nm | +34 bhp +61 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 Van
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.
This car is listed with a Bosch EDC16C9 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 Astra Van 1.7 CDTi 98bhp?
We expect 149bhp and 310Nm against 98bhp and 240Nm as standard: up to +51bhp and +70Nm. 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 Van 1.7 CDTi 98bhp?
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: 136bhp and 304Nm expected. The Eco map is economy first: 132bhp and 301Nm. Both still sit above the standard 98bhp and 240Nm.
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 Van figures
Other diesel variants
- 1.7 CDTi 108bhp 2010>
- 1.7 CDTi 79bhp 2004-2010
- 1.9 CDTi 120bhp 2004-2006
- 1.9 CDTi 120bhp 2007-2011
- 1.7 CDTi 123bhp 2010>
- 1.9 CDTi 150bhp 2004-2006
- 1.9 CDTi 150bhp 2007-2011
All diesel Astra Van (H) variants · Astra Van (H) 2004> overview · All Vauxhall figures