Chip Tuning Peugeot 408
Up to 30% more power for your Peugeot 408
The 408 (2022 →) is listed with 2 generations and 10 engines. For 5 turbo engines, choose the GAN GT or GAN GTL tuning module: the GAN GT adds +35 to +44 hp (GAN GT from 329 EUR, GAN GTL from 219 EUR). For 5 naturally aspirated engines, choose the GAN GA or GAN GA+: the GAN GA+ adds +13 to +20 hp (GAN GA+ from 189 EUR).
Which 408 do you have?
Start with the model year and chassis code. Within a generation, choose your engine by the power output in your vehicle documents.
Peugeot 408 tuning: what the GAN module does and doesn’t do
More power and torque without an ECU remap or replacing any parts. The tuning module only adjusts the engine sensor signals.
- Bluetoothsmartphone mode control
- 18 mappingsfine tuning for your engine

- 15 minutesfitted to the factory connectors
- IP67water and dust protection
- +44 hpwith the GAN GT on turbocharged engines
+35 to +44 hp across the Peugeot 408 range with the GAN GT or GAN GTL.
- +20 hpwith the GAN GA+ on naturally aspirated engines
Naturally aspirated Peugeot 408 engines: +13 to +20 hp.
- 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.
Peugeot 408 chip tuning: questions
Does the GAN tuning module work on the 408?
Yes, but the gain depends on the engine: each version has its own calibration. The generation table shows the stock output, the output with GAN and the gain.
Is a tuning module the same as a Stage 1 tune?
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.