Performance Chip Tuning Opel Astra G (until 2009)
6 engines · +9 to +24 hp
Opel Astra G: 6 engines — 4 gas and 2 diesel. Gains run from +9 to +24 hp, with up to +51 Nm more torque. GAN GTL from 219 EUR, GAN GT from 329 EUR. GAN GA+ from 189 EUR.
All Opel Astra G engines: exact gains
STOCK output, output with GAN, gain and price for each module. Diesel and gasoline engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuners and prices | |
|---|---|---|---|---|
| Diesel · 2 engines | ||||
| 1.7 CDTI (sensor1)80 hp / 170 Nm | +24 hp+51 Nm |
GTL — 219 EUR · 100 hp GT — 329 EUR · 104 hp |
Select → | |
| 1.7 CDTI (sensor2)80 hp / 170 Nm | +24 hp+51 Nm |
GTL — 219 EUR · 100 hp GT — 329 EUR · 104 hp |
Select → | |
| Gasoline · 4 engines | ||||
| 2.2i147 hp / 203 Nm | +18 hp+24 Nm |
GA — 189 EUR · 165 hp GA+ — 189 EUR · 165 hp |
Select → | |
| 1.6i101 hp / 150 Nm | +12 hp+18 Nm |
GA — 189 EUR · 113 hp GA+ — 189 EUR · 113 hp |
Select → | |
| 1.6i84 hp / 138 Nm | +10 hp+17 Nm |
GA — 189 EUR · 94 hp GA+ — 189 EUR · 94 hp |
Select → | |
| 1.6i75 hp / 128 Nm | +9 hp+15 Nm |
GA — 189 EUR · 84 hp GA+ — 189 EUR · 84 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?
The badge alone isn’t enough: in this generation, the same engine came with different horsepower ratings, each with its own calibration. Check the horsepower in your owner’s manual or vehicle documents and find the matching row.
Same badge, different factory power outputs in this generation:
Opel Astra G tune: what changes
The module plugs in between the sensors and the engine control unit (ECU) and adjusts their signals. It never rewrites your ECU software: your factory warranty is preserved, 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
- +24 hpbest in this generation
1.7 CDTI (sensor1) 80 hp → 104 hp. The other engines gain +9 hp and up; check the table for each one.
- +51 Nmfor diesels
Diesels gain mostly torque: +51 to +51 Nm for towing and hauling.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 4 naturally aspirated engines: the GAN GA / GAN GA+ tuners; check the table for each engine’s numbers.
- 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 G tuning FAQ
Which tuner do I need for my Opel Astra G?
Turbo engines take the GAN GT or GAN GTL; naturally aspirated engines take 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.