Chiptuning Vauxhall
Up to 30% more power for your Vauxhall
Our Vauxhall catalog covers 50 engines (models: 14, generations: 16). For 98% of the engines there are the GAN GT (up to 30% more power) and GAN GTL (up to 25%) tuning boxes; for 1 naturally aspirated engine, the GAN GA and GAN GA+ (up to 12%). Each engine’s figures are on its own page.
Vauxhall plug-in remap: no changes to the ECU software
The tuning box sits between the sensors and the engine control unit (ECU) and adjusts their signals – unlike a flash remap, which rewrites the ECU. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the box can be removed at any time.
- Bluetoothchange modes from your phone
- 18 mapsfine-tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- up to +30%more power with the GAN GT
Turbo engines pick up +21 to +56 hp, depending on the engine.
- up to +12%for naturally aspirated engines with the GAN GA+
GAN GA and GAN GA+ tuning boxes for 1 naturally aspirated engine from Vauxhall; see the catalog for each engine’s figure.
- GAN APPpower control via smartphone
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
Choose your Vauxhall model
Each model lists its generations: one click takes you to a generation, two to an engine.
The biggest Vauxhall gains
The six engines with the biggest gains in our catalogue. These are not typical figures but the top of the range.
| Model · generation | Engine | Fuel | STOCK | With GAN | Gain | Tuning boxes and prices |
|---|---|---|---|---|---|---|
| Astra Astra (J) 2009-15 | 1.6 SIDI | Petrol | 200 hp / 280 Nm | 256 hp / 365 Nm | +56 hp | GTL from 249 EUR GT from 399 EUR |
| Cascada Cascada | 1.6T | Petrol | 200 hp / 280 Nm | 256 hp / 365 Nm | +56 hp | GTL from 249 EUR GT from 399 EUR |
| Astra Astra (J) 2009-15 | 2.0 BiTurbo CdTi | Diesel | 194 hp / 400 Nm | 249 hp / 505 Nm | +55 hp | GTL from 249 EUR GT from 399 EUR |
| Antara Antara 2006-11 | 2.2 CDTI | Diesel | 184 hp / 400 Nm | 236 hp / 505 Nm | +52 hp | GTL from 249 EUR GT from 399 EUR |
| Vectra Vectra (C) 2002-08 | 3.0 CdTi | Diesel | 184 hp / 400 Nm | 236 hp / 505 Nm | +52 hp | GTL from 249 EUR GT from 399 EUR |
| Cascada Cascada | 1.6T | Petrol | 170 hp / 260 Nm | 218 hp / 341 Nm | +48 hp | GTL from 249 EUR GT from 399 EUR |
Vauxhall remapping: questions
Will a tuning box affect my Vauxhall warranty?
No. The box does not change the ECU software and can be removed at any time, so your manufacturer’s warranty is preserved. On top of that, we give an engine warranty: 2 years with the GAN GT, 1 year with the GAN GTL.
Tuning box or remap: which should I choose?
A flash remap permanently rewrites the maps in the ECU and leaves a trace in the flash counter. The GAN tuning box adjusts the sensor signals instead: the ECU stays in factory condition, and you can return the car to stock in about a minute. A flash remap can be the better choice if the engine has upgraded hardware, or if the car is out of warranty and you accept the risks.
Vauxhall chip tuning: what to know about the engines
Which Vauxhall models are in the catalog
The catalog covers 14 models from Vauxhall. The most engines are listed for the Astra (7), Vectra (7) and Combo (4). The biggest gain among the models is on the Astra: up to +56 hp.
Naturally aspirated Vauxhall engines
For 1 naturally aspirated engine from Vauxhall, there is the GAN GA+: up to 12% more power and up to 15% lower fuel consumption in ECO mode, which means better MPG. You can fit it yourself, in most cases in under 15 minutes.
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How to find your Vauxhall engine
Pick your model from the list above, then the generation by model year and chassis code, then the engine by the power output in your registration document. The engine page shows the exact gain and the price of the box.