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Opel Astra 1.8i 16v 125hp

(G) - 1998 - 2004

125 Original HP
135 Modified HP
170 Original NM
195 Modified NM
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Opel Astra

Opel Astra (G) - 1998 - 2004 1.8i 16v 125hp

Key Specifications

Generazione (G) - 1998 - 2004
Carburante Petrol
Codice motore Z18XE
ECU Siemens/Continental SIMTEC 71 / Siemens/Continental SIMTEC 90
Rapporto compressione 10.5:1
Alesaggio x Corsa 80.5 X 88.2 mm
Power 125 → 135 hp +10 hp
Torque 170 → 195 Nm +25 Nm
Power
135 HP
+10 HP (+8%)
Original 125 HP
Stage 1 135 HP
Torque
195 NM
+25 NM (+14.7%)
Original 170 NM
Stage 1 195 NM

Power Graph

Original Power 125HP
Original Torque 170Nm
Power After Remap 135HP
Torque After Remap 195Nm

Discover Our Tuning Solutions

Frequently Asked Questions - Opel Astra

The cost of Stage 1 tuning for Opel Astra 1.8i 16v 125hp varies depending on the ECU (Siemens/Continental SIMTEC 71 / Siemens/Continental SIMTEC 90) and specific requirements. Contact us for a free personalized quote.

Stage 1 tuning for Opel Astra typically takes 1-2 hours of work. Time may vary depending on the ECU type.

Yes, our Stage 1 tunes are developed respecting the engine's safety margins. The power increase from 125 to 135 HP (+8%) is within safe parameters.

With Stage 1 tuning, Opel Astra goes from 125 HP to 135 HP (+10 HP) and from 170 Nm to 195 Nm (+25 Nm).

Stage 1 remapping takes it from 125 HP to 135 HP (+10 HP, +8%) and torque from 170 Nm to 195 Nm (+25 Nm). These figures refer to the standard engine, with no hardware modifications.

A remap changes the factory calibration, so on a vehicle still under manufacturer warranty it may affect coverage on powertrain components. Performance tuning keeps all emission systems working; deactivating emission devices such as DPF, EGR or AdBlue is not road-legal in the EU and UK and is intended for off-road, motorsport or export use only.

With a normal driving style consumption usually stays the same or drops slightly: the extra torque at low rpm means less throttle for the same speed. Consumption goes up only if you actually use the additional power.

Yes. The original file is read and stored before any modification, so the vehicle can be returned to the factory calibration at any time.

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Opel
Opel Astra 1.8i 16v 125hp
+10 HP
135 HP