Stage 1
Stage 1 · Petrol · 1.8i 16v 115hp
Opel Astra-G 1.8 16V Stage 1 file Siemens · SW 071091
Opel Astra-G 1.8 16V Petrol 84.6 kW (115 HP) Stage 12002, Petrol, 84.6 kW (115 hp)
115 → 125 HP +10 HP +15 Nm 9% more power
Calibrated ECU file for (SW 071091). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
Performance projection
Matched engine: 1.8i 16v 115hp, X18XE1, 1.8L, Petrol. Engine #5553 in our gains database.
- Power
- 125 HP+10 HP from 115
- Torque
- 185 Nm+15 Nm from 170
- Fuel economy
- −8 %−12% full load
Real data from Gains API. Dyno curve = typical ECU-family projection. Final gains depend on fuel, altitude, wear.
How it works
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Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
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Match the numbers
Your read must show hardware 071091 and software 071091.
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Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
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Write it and drive
Write it back the way you read it. Not right for your car? We correct it free.
What the car needs
Required modifications: Stage 1, Petrol.
Hardware
- No hardware changes required: runs on completely stock hardware
Software / calibration
- Boost / load targets optimised within factory hardware limits
- Ignition advance refined for the running fuel grade
- Throttle response and torque request remapped
- Factory safeties (knock, lambda, EGT) preserved
Stage 1 is a software-only calibration. Compatible with stock turbo, injectors, intercooler, exhaust and clutch.
Vehicle & ECU specifications
Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.
| Vehicle make | Opel |
|---|---|
| Vehicle model | Astra |
| Model year | 2002 |
| Displacement | 1.8 L |
| Fuel / Induction | Petrol |
| Factory power | 84.6 kW (115 HP) |
| ECU manufacturer | Siemens |
| ECU software | 071091 |
| Calibration stage | Stage 1 |
| Cylinder capacity | 1796 CC |
| Compression ratio | 10,5 : 1 |
| Bore × Stroke | 80,5 X 88,2 mm |
| OEM engine code | X18XE1 |
| File format | BIN / ORI |
| Checksum | Pre-corrected (ready to flash) |
| Delivery | Instant download after payment |
Engine performance matrix
Power, torque and fuel-economy figures for every tuning stage on this engine, sourced from the tuning-database Gains API. Values are healthy-engine crank numbers; real on-road gains vary with fuel, altitude and mechanical condition.
| Stage | Power | Torque | Δ HP | Δ Nm |
|---|---|---|---|---|
| Original / Factory | 115 HP | 170 Nm | — | — |
| Stage 1 | 125 HP | 185 Nm | +10 (8.7%) | +15 |
| Stage 2 | 133 HP | 194 Nm | +18 (15.7%) | +24 |
| Stage 3 | 190 HP | 264 Nm | +75 (65.2%) | +94 |
| Stage 4 | 224 HP | 315 Nm | +109 (94.8%) | +145 |
About this calibration file
The Stage 1 calibration for the 2002 Opel Astra 1.8L Petrol is a drop-in remap that works on completely stock hardware — no turbo, injector, intercooler or fuel-system upgrades required. Injection timing, boost targets, rail-pressure limits and torque maps are rebalanced to extract the safe headroom the OEM leaves untouched for fleet-fuel tolerance, altitude margin and warranty buffer.
This file matches a Siemens ECU and software version 071091. Verify both identifiers in your flashing tool before writing — an ID mismatch is the most common cause of a bricked ECU. If you are unsure, upload a read of your original file via the file-request wizard and our engineers will confirm compatibility before you flash.
Projected output on a healthy, stock-hardware example of this engine: 125 HP and 185 Nm at the crank — a gain of +10 HP (9%) and +15 Nm over the factory 115 HP / 170 Nm baseline. These numbers are sourced from our Vehicle Performance Database, which aggregates dyno results across this engine family. Real-world gains depend on fuel grade, ambient temperature, mechanical condition and intake/exhaust state.
The file is delivered as a ready-to-flash BIN (and ORI backup where applicable) compatible with all major tools — KESS V2/V3, KTAG, AutoTuner, CMDFlash, Dimsport New Genius, MPPS, Flex, BFlash, PCMFlash, MMFlash — via OBD, bench or boot-mode as supported by your ECU family. Checksums are pre-computed and verified; no additional checksum tool is required. All files include a free revision if post-flash logs reveal a fuelling, boost or EGT issue.
Frequently asked questions
Product details
This product contains a calibrated Stage1 tuning file for Opel Astra-G 1.8 16V 2002 Benzin 84.6KW with Siemens 071091. The base stock vehicle for this calibration has a factory output of around 84.6 kW (~115 HP). This Stage 1 calibration is designed for stock hardware, offering a safe and reliable increase in power and torque for daily use.
All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number such as 071091. Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
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