Vauxhall Astra (G) 1998-2004 1.4i 88bhp remap figures
Thinking of remapping a Vauxhall Astra 1.4i 88bhp? The standard car makes 88bhp and 125Nm; with a Stage 1 remap from our Leicester workshop we expect around 99bhp and 138Nm, up to +11bhp and +13Nm.
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 | 88 bhp | 99 bhp | +11 bhp |
| Torque | 125 Nm | 138 Nm | +13 Nm |
All maps at a glance
| Map | Power | Torque | Expected gain, up to |
|---|---|---|---|
| Stock | 88 bhp | 125 Nm | |
| Stage 1Maximum software-only performance | 99 bhp | 138 Nm | +11 bhp +13 Nm |
| Stage 1 EcoPerformance with economy in mind | 96 bhp | 137 Nm | +8 bhp +12 Nm |
| Eco mapEconomy first | 95 bhp | 136 Nm | +7 bhp +11 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 Astra
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.
The ECU recorded for this variant is a Delco Multec. 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 1.4i 88bhp?
We expect 99bhp and 138Nm against 88bhp and 125Nm as standard: up to +11bhp and +13Nm. 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 1.4i 88bhp?
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: 96bhp and 137Nm expected. The Eco map is economy first: 95bhp and 136Nm. Both still sit above the standard 88bhp and 125Nm.
Do I need to tell my insurer about a remap?
Yes. A remap is a modification, so you should declare it to your insurer.