Chiptuning JAC
Up to 30% more power for your JAC
Our JAC catalog covers 10 engines (models: 9, generations: 9). For 30% of the engines there are the GAN GT (up to 30% more power) and GAN GTL (up to 25%) tuning boxes; for 7 naturally aspirated engines, the GAN GA and GAN GA+ (up to 12%). Each engine’s figures are on its own page.
JAC 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 +43 to +44 hp, depending on the engine.
- up to +12%for naturally aspirated engines with the GAN GA+
GAN GA and GAN GA+ tuning boxes for 7 naturally aspirated engines from JAC; 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 JAC model
Each model lists its generations: one click takes you to a generation, two to an engine.
The biggest JAC 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 |
|---|---|---|---|---|---|---|
| Hunter I Hunter I | 2.4T | Petrol | 211 hp / 320 Nm | 255 hp / 387 Nm | +44 hp | GTL from 249 EUR GT from 399 EUR |
| T8/T8 Pro T8/T8 Pro | 2.4T | Petrol | 211 hp / 320 Nm | 255 hp / 387 Nm | +44 hp | GTL from 249 EUR GT from 399 EUR |
| T8/T8 Pro T8/T8 Pro | 2.4T | Petrol | 204 hp / 320 Nm | 247 hp / 387 Nm | +43 hp | GTL from 249 EUR GT from 399 EUR |
| J5 J5 | 1.8i | Petrol | 141 hp / 165 Nm | 158 hp / 185 Nm | +17 hp | |
| J6 J6 | 1.8i | Petrol | 141 hp / 165 Nm | 158 hp / 185 Nm | +17 hp | |
| M1 M1 (Refine) | 2.4i | Petrol | 136 hp / 193 Nm | 152 hp / 216 Nm | +16 hp |
JAC remapping: questions
Will a tuning box affect my JAC 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.
JAC chip tuning: what to know about the engines
Which JAC models are in the catalog
The catalog covers 9 models from JAC. The most engines are listed for the T8/T8 Pro (2), Hunter I (1) and J4 (1). The biggest gain among the models is on the T8/T8 Pro: up to +44 hp.
Naturally aspirated JAC engines
For 7 naturally aspirated engines from JAC, 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 JAC 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.