Performance Chip Tuning Mercedes-Benz V W638 (until 2003)
5 engines · +17 to +43 hp
V W638: 5 engines — 2 gas and 3 diesel. Gains run from +17 to +43 hp, with up to +107 Nm more torque. GAN GTL from 219 EUR, GAN GT from 329 EUR. GAN GA+ from 189 EUR.
All V W638 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 · 3 engines | ||||
| 3.0 CDI204 hp / 510 Nm | +43 hp+107 Nm |
GTL — 249 EUR · 241 hp GT — 399 EUR · 247 hp |
Select → | |
| 220 2.2 CDI122 hp / 300 Nm | +37 hp+85 Nm |
GTL — 219 EUR · 153 hp GT — 329 EUR · 159 hp |
Select → | |
| 200 2.2 CDI102 hp / 250 Nm | +31 hp+71 Nm |
GTL — 219 EUR · 128 hp GT — 329 EUR · 133 hp |
Select → | |
| Gasoline · 2 engines | ||||
| 280174 hp / 237 Nm | +21 hp+28 Nm |
GA — 189 EUR · 195 hp GA+ — 189 EUR · 195 hp |
Select → | |
| 230143 hp / 215 Nm | +17 hp+26 Nm |
GA — 189 EUR · 160 hp GA+ — 189 EUR · 160 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?
Find your engine by its horsepower – check your window sticker or decode your VIN. Each version has its own calibration.
Mercedes-Benz V W638 tune: what changes
The module plugs in between the sensors and the engine control unit (ECU) and adjusts their signals. It never rewrites your ECU software: your factory warranty is preserved, 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
- +43 hpbest in this generation
3.0 CDI 204 hp → 247 hp. The other engines gain +17 hp and up; check the table for each one.
- +107 Nmfor diesels
Diesels gain mostly torque: +71 to +107 Nm for towing and hauling.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 2 naturally aspirated engines: the GAN GA / GAN GA+ tuners; check the table for each engine’s numbers.
- 50 daystest drive
Enhanced performance or your money back, excluding shipping costs.
Mercedes-Benz V W638 tuning FAQ
Which tuner do I need for my V W638?
Turbo engines take the GAN GT or GAN GTL; naturally aspirated engines take the GAN GA or GAN GA+. 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.