Performance Chip Tuning Vauxhall
Up to 30% more power for your Vauxhall
The Vauxhall catalog lists 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 modules; for 1 naturally aspirated engine, the GAN GA and GAN GA+ (up to 12%). Each engine’s figures are on its own page.
Vauxhall performance chip: more power, no ECU flash
The GAN module sits between the sensors and the engine control unit (ECU) and adjusts their signals. Unlike a flash tuner, it doesn’t rewrite 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
- 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 modules for 1 naturally aspirated engine from Vauxhall; see the catalog for each engine’s figure.
- 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.
Choose your Vauxhall model
Each model lists its generations: one click gets you to a generation, two to an engine.
The biggest Vauxhall gains
The six engines with the biggest gains in our catalog. These are the top of the range, not typical figures.
| Model · generation | Engine | Fuel | STOCK | With GAN | Gain | Tuners and prices |
|---|---|---|---|---|---|---|
| Astra Astra (J) 2009-15 | 1.6 SIDI | Gasoline | 200 hp / 280 Nm | 256 hp / 365 Nm | +56 hp | GTL from 249 EUR GT from 399 EUR |
| Cascada Cascada | 1.6T | Gasoline | 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 | Gasoline | 170 hp / 260 Nm | 218 hp / 341 Nm | +48 hp | GTL from 249 EUR GT from 399 EUR |
Vauxhall tuning FAQ
Does the GAN module affect my Vauxhall factory warranty?
No. The module doesn’t change the ECU software and can be removed at any time, so your factory warranty is preserved. On top of that, GAN gives its own engine warranty: 2 years with the GAN GT, 1 year with the GAN GTL.
Plug-in performance chip or flash tuner: which should I choose?
A flash tuner rewrites the maps in your ECU, and the flash counter records it. The GAN module adjusts the sensor signals instead: the ECU stays in factory condition, and you can return the car to stock in about a minute.
Vauxhall engines: what to know before you tune
Which Vauxhall models are in the catalog
The catalog lists 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’s the GAN GA+: up to 12% more power and up to 15% better fuel economy in ECO mode. It’s plug-and-play: you can install it yourself, in most cases in under 15 minutes.
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How to find your Vauxhall engine
Pick your model in the list above, then the generation by model year, and the engine by displacement and horsepower (see your owner’s manual or vehicle documents). The engine page shows the exact gain and the tuner price.