Chiptuning Mercedes-Benz C L203
3 engines · +35 to +44 hp
C L203: 3 engines — 3 diesel. The gain is +35 to +44 hp, with up to +99 Nm more torque. GAN GTL from 219 EUR, GAN GT from 329 EUR.
All C L203 engines: exact gains
Standard output, output with GAN, the gain and the price for each box.
| Engine | STOCK → with GAN | Gain | Tuning boxes and prices | |
|---|---|---|---|---|
| Diesel · 3 engines | ||||
| Sport Coupe 220 CDI150 hp / 340 Nm | +44 hp+99 Nm |
GTL — 249 EUR · 188 hp GT — 399 EUR · 194 hp |
Select → | |
| Sport Coupe 30 AMG 3.0d231 hp / 540 Nm | +39 hp+92 Nm |
GTL — 249 EUR · 263 hp GT — 399 EUR · 270 hp |
Select → | |
| Sport Coupe 200 CDI122 hp / 270 Nm | +35 hp+78 Nm |
GTL — 219 EUR · 153 hp GT — 329 EUR · 157 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.
Mercedes-Benz C L203 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
- +44 hpbest in this generation
Sport Coupe 220 CDI 150 hp → 194 hp. The other engines gain at least +35 hp; check the table for each one.
- +99 Nmfor diesels
Diesels gain mostly torque: +78 to +99 Nm, which helps with overtaking and towing.
- 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.
Mercedes-Benz C L203 remap: common questions
Which tuning box do I need for the C L203?
Every engine in this generation is turbocharged, so it takes the GAN GT or GAN GTL. 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.