Buick Chip Tuning
Up to 30% more power for your Buick
The Buick catalogue lists 40 engines (models: 11, generations: 11). For 8% of the engines, there are the GAN GT (up to 30% more power) and GAN GTL (up to 25%) tuning modules; for 37 naturally aspirated engines, the GAN GA and GAN GA+ (up to 12%). Each engine’s figures are on its own page.
Buick chip tuning without an ECU remap
The tuning module sits between the sensors and the engine control unit (ECU) and adjusts their signals. Your manufacturer’s warranty is preserved: the ECU software is never changed, and the module can be removed at any time.
- Bluetoothsmartphone mode control
- 18 mappingsfine tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- up to +30%more power with the GAN GT
Turbocharged engines gain +44 to +46 hp, depending on the engine.
- up to +12%for naturally aspirated engines with the GAN GA+
GAN GA and GAN GA+ tuning modules for 37 naturally aspirated engines from Buick; see the catalogue for each engine’s figure.
- GAN APPpower control via smartphone
SPORT, DYNAMIC, ECO and STOCK modes in the GAN app.
- 50 daystest drive
Enhanced performance or your money back, excluding delivery costs.
Choose your Buick model
Each model shows its generations: one click to a generation, two to an engine.
The biggest Buick 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 modules and prices |
|---|---|---|---|---|---|---|
| Regal Regal | 2.0 T | Petrol | 218 hp / 350 Nm | 264 hp / 424 Nm | +46 hp | GTL from 249 EUR GT from 399 EUR |
| Regal Regal | 2.0 T GS | Petrol | 272 hp / 400 Nm | 318 hp / 468 Nm | +46 hp | GTL from 249 EUR GT from 399 EUR |
| Verano Verano | 2.0 T | Petrol | 258 hp / 353 Nm | 302 hp / 413 Nm | +44 hp | GTL from 249 EUR GT from 399 EUR |
| LaCrosse LaCrosse | 3.0i | Petrol | 258 hp / 294 Nm | 288 hp / 312 Nm | +30 hp | |
| Rendezvous Rendezvous | 3.6i | Petrol | 247 hp / 315 Nm | 277 hp / 353 Nm | +30 hp | |
| LaCrosse LaCrosse | 3.6i | Petrol | 243 hp / 311 Nm | 272 hp / 348 Nm | +29 hp |
Buick chip tuning: questions
Does the GAN module affect my Buick warranty?
No. The module does not change the ECU software and can be removed at any time, so your manufacturer’s warranty is preserved. We also give an engine warranty: 2 years with the GAN GT, 1 year with the GAN GTL.
Tuning box or ECU remap: which should I choose?
An ECU remap permanently changes the maps in the ECU and leaves a trace in the flash counter. The GAN tuning module adjusts the sensor signals instead: the ECU stays in factory condition, and you can return the car to stock in about a minute.
Buick chip tuning: what to know about the engines
Which Buick models are in the catalogue
The catalogue lists 11 models from Buick. The most engines are listed for the LaCrosse (10), Lucerne (5) and Regal (5). The biggest gain among the models is on the Regal: up to +46 hp.
Naturally aspirated Buick engines
For 37 naturally aspirated engines from Buick, there is the GAN GA+: up to 12% more power and up to 15% lower fuel consumption in ECO mode. You can fit it yourself, in most cases in under 15 minutes.
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How to find your Buick engine
Choose your model in the list above, then the generation by model year and chassis code, and the engine by the power output in your registration document. The engine page shows the exact gain and the tuning module price.