Your Vehicle
Vauxhall Astra 1.2i 16v 65hp
Technical Specifications
Power and torque increase
Stage 1: software remap only, no mechanical changes, fully reversible.
Stage 1: file 100 € online + installation 350 € at the workshop (via the OBD port) Book now
Power HP
Torque Nm
Buy the Stage 1 file, pay the installation at the workshop
100 € VAT included: the file developed for your engine, paid online
Installation: 350 € network price, the workshop may charge less, paid at the chosen workshop (via the OBD port) · terms
Power Graph
Vauxhall Astra 1.2i 16v 65hp: da 65 a 70HP
Remapping Vauxhall Astra
MasterTuning develops remapping for Vauxhall. La Vauxhall Astra 1.2i 16v 65hp può passare da 65 HP a 70 HP con un incremento di 5 HP.
The development of each remap is customized by MasterTuning.
- 100% customised files with lifetime warranty
- Reference values for Stage 1: the file is developed on your vehicle and checked in the workshop
- Best performance, within safety margins
- Reduced fuel consumption
ECU Remapping Details Vauxhall Astra 1.2i 16v 65hp
The Vauxhall Astra 1.2i 16v 65hp is equipped with a petrol engine that produces 65 HP and 110 Nm of torque in its factory configuration. With MasterTuning's professional ECU remapping, this Vauxhall can achieve 70 HP (+8%) and 120 Nm (+9%).
Our Stage 1 tuning for the Astra (G) - 1998 - 2004 delivers an impressive gain of +5 HP and +10 Nm, optimizing the petrol engine's performance while maintaining reliability and staying within safe parameters.
The engine code Z12XE identifies this specific powerplant configuration. The Bosch M1.5.5 ECU is professionally recalibrated to unlock hidden potential while preserving engine longevity.
The Astra's petrol engine benefits significantly from professional ECU calibration. The result is a more responsive, enjoyable driving experience with improved power delivery throughout the rev range.
Technical Specifications — Vauxhall Astra 1.2i 16v 65hp
Factory technical data for the Vauxhall Astra 1.2i 16v 65hp ((G) - 1998 - 2004), used by MasterTuning engineers to develop a remap tailored to this specific powerplant. Figures shown are reference values for Stage 1; the file is developed on your vehicle and checked in the workshop.
| Engine code | Z12XE |
|---|---|
| ECU / Control unit | Bosch M1.5.5 |
| Fuel | Petrol |
| Compression ratio | 10.1 |
| Bore × stroke | 72.5 X 72.6 mm |
| Stock power | 65 HP · 110 Nm |
| Remapped power (Stage 1) | 70 HP (+5) · 120 Nm (+10) |
Don't want to touch the ECU?
Rapid Dimsport add-on modules connect to the engine sensors with original connectors: they fit in a few hours and come off without a trace, leaving the factory software untouched. Useful on a leased car, one still under warranty or one you plan to sell soon. Check which ones fit your Vauxhall Astra.
Frequently Asked Questions - Vauxhall Astra
How much power can I gain from remapping my Vauxhall Astra?
With MasterTuning Stage 1, your Vauxhall Astra 1.2i 16v 65hp can gain +5 HP (from 65 to 70 HP) and +10 Nm of torque. This represents a 8% increase in power.
Which ECU does the Vauxhall Astra 1.2i 16v 65hp use?
The Vauxhall Astra 1.2i 16v 65hp uses the Bosch M1.5.5 engine control unit. MasterTuning recalibrates this ECU for Stage 1 and Stage 2.
What is the engine code of the Vauxhall Astra 1.2i 16v 65hp?
The engine code of the Vauxhall Astra 1.2i 16v 65hp is Z12XE. You can find it in the vehicle documents or on the engine plate.
Is ECU remapping safe for the Vauxhall Astra engine?
Yes, MasterTuning's remapping for the Vauxhall Astra 1.2i 16v 65hp is developed within safe parameters. Each file is developed on your vehicle, checked in the workshop and stays within the mechanical limits of the Z12XE engine.
Is the Vauxhall ECU remapping reversible?
Absolutely. The original factory calibration of your Vauxhall Astra is always backed up before remapping. The process is 100% reversible at any time.
Will remapping affect my Vauxhall warranty?
ECU remapping may affect your manufacturer warranty. We recommend checking your specific warranty terms. Many of our customers choose to remap after the warranty period or accept this trade-off for the significant performance gains.
Other Remaps You Might Like
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Book your remap or ask for a quote
Stage 1 can be bought online and is done at the workshop you choose; for Stage 2 we send you a quote.
Stage 2 is quoted on request: write to us and we will reply with price and timing.
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