Chiptuning Citroen C5 I (2001–2008)
15 engines · +14 to +48 hp
Citroen C5 I: 15 engines — 7 petrol and 8 diesel. The gain is +14 to +48 hp, with up to +99 Nm more torque. GAN GTL from 219 EUR, GAN GT from 329 EUR. GAN GA+ from 189 EUR.
All Citroen C5 I 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 · 8 engines | ||||
| 2.2 HDI170 hp / 370 Nm | +48 hp+99 Nm |
GTL — 249 EUR · 211 hp GT — 399 EUR · 218 hp |
Select → | |
| 2.0 HDI 135136 hp / 320 Nm | +40 hp+89 Nm |
GTL — 219 EUR · 170 hp GT — 329 EUR · 176 hp |
Select → | |
| 2.2 HDI133 hp / 314 Nm | +39 hp+88 Nm |
GTL — 219 EUR · 166 hp GT — 329 EUR · 172 hp |
Select → | |
| 1.6 HDI109 hp / 240 Nm | +33 hp+72 Nm |
GTL — 219 EUR · 137 hp GT — 329 EUR · 142 hp |
Select → | |
| 2.0 HDI (system Bosch)109 hp / 250 Nm | +33 hp+75 Nm |
GTL — 219 EUR · 137 hp GT — 329 EUR · 142 hp |
Select → | |
| 2.0 HDI (system Siemens, Delphi)109 hp / 250 Nm | +32 hp+73 Nm |
GTL — 219 EUR · 136 hp GT — 329 EUR · 141 hp |
Select → | |
| 2.0 HDI (system Bosch)90 hp / 205 Nm | +27 hp+62 Nm |
GTL — 219 EUR · 113 hp GT — 329 EUR · 117 hp |
Select → | |
| 2.0 HDI (system Siemens, Delphi)90 hp / 205 Nm | +26 hp+59 Nm |
GTL — 219 EUR · 113 hp GT — 329 EUR · 116 hp |
Select → | |
| Petrol · 7 engines | ||||
| 3.0i235 hp / 320 Nm | +28 hp+38 Nm |
GA — 199 EUR · 263 hp GA+ — 199 EUR · 263 hp |
Select → | |
| 2.9i207 hp / 285 Nm | +25 hp+34 Nm |
GA — 199 EUR · 232 hp GA+ — 199 EUR · 232 hp |
Select → | |
| 3.0i207 hp / 285 Nm | +25 hp+34 Nm |
GA — 199 EUR · 232 hp GA+ — 199 EUR · 232 hp |
Select → | |
| 2.0i141 hp / 200 Nm | +17 hp+24 Nm |
GA — 189 EUR · 158 hp GA+ — 189 EUR · 158 hp |
Select → | |
| 2.0i136 hp / 190 Nm | +16 hp+23 Nm |
GA — 189 EUR · 152 hp GA+ — 189 EUR · 152 hp |
Select → | |
| 1.8i125 hp / 170 Nm | +15 hp+20 Nm |
GA — 189 EUR · 140 hp GA+ — 189 EUR · 140 hp |
Select → | |
| 1.8i116 hp / 160 Nm | +14 hp+19 Nm |
GA — 189 EUR · 130 hp GA+ — 189 EUR · 130 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?
The badge alone is not enough: in this generation, the same engine designation came in different power outputs, each with its own calibration. Check the power output in your registration document and find the matching row.
Same badge, different factory power outputs in this generation:
Citroen C5 I 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
- +48 hpbest in this generation
2.2 HDI 170 hp → 218 hp. The other engines gain at least +14 hp; check the table for each one.
- +99 Nmfor diesels
Diesels gain mostly torque: +59 to +99 Nm, which helps with overtaking and towing.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 7 naturally aspirated engines: 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 C5 I remap: common questions
Which tuning box do I need for the Citroen C5 I?
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.