Performance Chip Tuning Audi A6 C5 (2001–2004)
16 engines · +14 to +30 hp
Audi A6 C5: 16 engines — 10 gas and 6 diesel. Gains run from +14 to +30 hp, with up to +44 Nm more torque. GAN GA+ from 189 EUR.
All Audi A6 C5 engines: exact gains
STOCK output, output with GAN, gain and price for each module. Diesel and gasoline engines are listed separately.
| Engine | STOCK → with GAN | Gain | Tuners and prices | |
|---|---|---|---|---|
| Diesel · 6 engines | ||||
| 2.5 TDI180 hp / 370 Nm | +22 hp+44 Nm |
GA — 189 EUR · 202 hp GA+ — 189 EUR · 202 hp |
Select → | |
| 2.5 TDI178 hp / 370 Nm | +21 hp+44 Nm |
GA — 189 EUR · 199 hp GA+ — 189 EUR · 199 hp |
Select → | |
| 2.5 TDI163 hp / 350 Nm | +20 hp+42 Nm |
GA — 189 EUR · 183 hp GA+ — 189 EUR · 183 hp |
Select → | |
| 1.9 TDI131 hp / 285 Nm | +16 hp+34 Nm |
GA — 189 EUR · 147 hp GA+ — 189 EUR · 147 hp |
Select → | |
| 1.9 TDI131 hp / 310 Nm | +16 hp+37 Nm |
GA — 189 EUR · 147 hp GA+ — 189 EUR · 147 hp |
Select → | |
| 1.9 TDI116 hp / 285 Nm | +14 hp+34 Nm |
GA — 189 EUR · 130 hp GA+ — 189 EUR · 130 hp |
Select → | |
| Gasoline · 10 engines | ||||
| 2.7 TFSI250 hp / 350 Nm | +30 hp+42 Nm |
GA — 199 EUR · 280 hp GA+ — 199 EUR · 280 hp |
Select → | |
| 2.7 TFSI230 hp / 310 Nm | +28 hp+37 Nm |
GA — 199 EUR · 258 hp GA+ — 199 EUR · 258 hp |
Select → | |
| 3.0 FSI220 hp / 300 Nm | +26 hp+36 Nm |
GA — 199 EUR · 246 hp GA+ — 199 EUR · 246 hp |
Select → | |
| 4.2 FSI300 hp / 400 Nm | +24 hp+32 Nm |
GA — 219 EUR · 324 hp GA+ — 219 EUR · 324 hp |
Select → | |
| 2.8 FSI193 hp / 280 Nm | +23 hp+34 Nm |
GA — 189 EUR · 216 hp GA+ — 189 EUR · 216 hp |
Select → | |
| 2.4 FSI165 hp / 230 Nm | +20 hp+28 Nm |
GA — 189 EUR · 185 hp GA+ — 189 EUR · 185 hp |
Select → | |
| 2.4 FSI170 hp / 230 Nm | +20 hp+28 Nm |
GA — 189 EUR · 190 hp GA+ — 189 EUR · 190 hp |
Select → | |
| 1.8 TFSI150 hp / 210 Nm | +18 hp+25 Nm |
GA — 189 EUR · 168 hp GA+ — 189 EUR · 168 hp |
Select → | |
| 2.0 FSI131 hp / 195 Nm | +16 hp+23 Nm |
GA — 189 EUR · 147 hp GA+ — 189 EUR · 147 hp |
Select → | |
| 1.8 FSI125 hp / 170 Nm | +15 hp+20 Nm |
GA — 189 EUR · 140 hp GA+ — 189 EUR · 140 hp |
Select → | |
Each engine gets its own performance chip: GAN GT / GTL or GAN GA / GA+. Prices are per performance chip and include the current discount.
Not sure which engine you have?
The badge alone isn’t enough: in this generation, the same engine came with different horsepower ratings, each with its own calibration. Check the horsepower in your owner’s manual or vehicle documents and find the matching row.
Same badge, different factory power outputs in this generation:
Audi A6 C5 tune: what changes
More power and torque with no ECU flash and no new parts – the module only adjusts the engine sensor signals. Your factory warranty is preserved: the ECU software is never changed, 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
- +30 hpbest in this generation
2.7 TFSI 250 hp → 280 hp. The other engines gain +14 hp and up; check the table for each one.
- +44 Nmfor diesels
Diesels gain mostly torque: +34 to +44 Nm for towing and hauling.
- 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.
Audi A6 C5 tuning FAQ
Which tuner do I need for my Audi A6 C5?
Find your engine in the table above – each row shows the tuner and the price.
Is a tuning module the same as a Stage 1 tune?
Not quite. Stage 1 usually means an ECU flash tune 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.