Performance Chip Tuning Opel Astra F (2000–2005)
2 engines · +7 to +13 hp
Opel Astra F: 2 engines — 2 gas. Gains run from +7 to +13 hp, with up to +19 Nm more torque. GAN GA+ from 189 EUR.
All Opel Astra F engines: exact gains
STOCK output, output with GAN, gain and price for each module.
| Engine | STOCK → with GAN | Gain | Tuners and prices | |
|---|---|---|---|---|
| Gasoline · 2 engines | ||||
| 1.8i110 hp / 155 Nm | +13 hp+19 Nm |
GA — 189 EUR · 123 hp GA+ — 189 EUR · 123 hp |
Select → | |
| 1.4i60 hp / 103 Nm | +7 hp+12 Nm |
GA — 189 EUR · 67 hp GA+ — 189 EUR · 67 hp |
Select → | |
Each engine gets its own performance chip: GAN GT / GTL or GAN GA / GA+. Prices are per performance chip and include the current discount.
Not sure which engine you have?
Find your engine by its horsepower – check your window sticker or decode your VIN. Each version has its own calibration.
Opel Astra F tune: what changes
More power and torque with no ECU flash and no new parts – the module only adjusts the engine sensor signals. Your factory warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothswitch modes from your phone
- 18 mapsto fine-tune your engine

- 15 minutesplug-and-play install
- IP67water and dust protection
- +13 hpbest in this generation
1.8i 110 hp → 123 hp. The other engines gain +7 hp and up; check the table for each one.
- up to +30%more power
GAN GT: up to 30%, GAN GTL: up to 25%, GAN GA+: up to 12%.
- GAN APPpower control via smartphone
Switch between SPORT, DYNAMIC, ECO and STOCK in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding shipping costs.
What Opel Astra owners say about GAN
In general, I liked everything!! At least according to my personal feelings this device corresponds to the declared characteristics Good device, and you do not need to buy another device for another car.
Opel Astra F tuning FAQ
Which tuner do I need for my Opel Astra F?
Every engine in this generation is naturally aspirated, so you’ll want the GAN GA or GAN GA+. Find your engine in the table above – each row shows the tuner and the price.
Is a tuning module the same as a Stage 1 tune?
Not quite. Stage 1 usually means an ECU flash tune without replacing any parts. The tuning module also works without replacing parts, but it does not change the ECU software: it adjusts the sensor signals, comes off in about a minute, and the OFF button in the app restores the factory settings.