Chiptuning Citroen C6
7 engines · +25 to +65 hp
Citroen C6: 7 engines — 3 petrol and 4 diesel. The gain is +25 to +65 hp, with up to +113 Nm more torque. GAN GTL from 249 EUR, GAN GT from 399 EUR. GAN GA+ from 199 EUR.
All Citroen C6 engines: exact gains
Standard output, output with GAN, the gain and the price for each box. Diesel and petrol engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuning boxes and prices | |
|---|---|---|---|---|
| Diesel · 4 engines | ||||
| 3.0 V6 HDI 240 FAP241 hp / 450 Nm | +65 hp+113 Nm |
GTL — 249 EUR · 296 hp GT — 399 EUR · 306 hp |
Select → | |
| 2.2 170 HDI170 hp / 370 Nm | +48 hp+99 Nm |
GTL — 249 EUR · 211 hp GT — 399 EUR · 218 hp |
Select → | |
| 2.2 165 HDI163 hp / 340 Nm | +47 hp+93 Nm |
GTL — 249 EUR · 203 hp GT — 399 EUR · 210 hp |
Select → | |
| 2.7 HDI 205204 hp / 440 Nm | +43 hp+92 Nm |
GTL — 249 EUR · 241 hp GT — 399 EUR · 247 hp |
Select → | |
| Petrol · 3 engines | ||||
| 1.8 T204 hp / 280 Nm | +43 hp+59 Nm |
GTL — 249 EUR · 241 hp GT — 399 EUR · 247 hp |
Select → | |
| 1.6 T167 hp / 245 Nm | +35 hp+51 Nm |
GTL — 249 EUR · 197 hp GT — 399 EUR · 202 hp |
Select → | |
| 2.9i211 hp / 290 Nm | +25 hp+35 Nm |
GA — 199 EUR · 236 hp GA+ — 199 EUR · 236 hp |
Select → | |
Each engine has its own tuning box: GAN GT / GTL or GAN GA / GA+. Prices are per box and include the current discount.
Not sure which engine you have?
Find your engine by the power output in your registration document: each version has its own module calibration.
Citroen C6 remap: what changes
The GAN box plugs in between the sensors and the engine control unit (ECU) and adjusts their signals, while a flash remap rewrites the ECU itself. 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
- +65 hpbest in this generation
3.0 V6 HDI 240 FAP 241 hp → 306 hp. The other engines gain at least +25 hp; check the table for each one.
- +113 Nmfor diesels
Diesels gain mostly torque: +92 to +113 Nm, which helps with overtaking and towing.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 1 naturally aspirated engine: GAN GA / GAN GA+ tuning boxes; check the table for each engine’s figure.
- 50 daystest drive
Feel the difference or get your money back, excluding delivery costs.
Citroen C6 remap: common questions
Which tuning box do I need for the Citroen C6?
Turbocharged engines take the GAN GT or GAN GTL, naturally aspirated ones the GAN GA or GAN GA+. Find your engine in the table above – each row shows the box and its price.
Is a tuning module the same as a Stage 1 remap?
Not quite. Stage 1 usually means an ECU remap 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.