Chiptuning Smart ForFour
8 engines · +8 to +29 hp
Smart ForFour: 8 engines — 6 petrol and 2 diesel. The gain is +8 to +29 hp, with up to +63 Nm more torque. GAN GTL from 219 EUR, GAN GT from 329 EUR. GAN GA+ from 189 EUR.
All Smart ForFour 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 · 2 engines | ||||
| 1.5 CDI95 hp / 210 Nm | +29 hp+63 Nm |
GTL — 219 EUR · 120 hp GT — 329 EUR · 124 hp |
Select → | |
| 1.5 CDI68 hp / 160 Nm | +20 hp+48 Nm |
GTL — 219 EUR · 85 hp GT — 329 EUR · 88 hp |
Select → | |
| Petrol · 6 engines | ||||
| 0.9T90 hp / 135 Nm | +22 hp+37 Nm |
GTL — 219 EUR · 109 hp GT — 329 EUR · 112 hp |
Select → | |
| 1.5122 hp / 160 Nm | +15 hp+19 Nm |
GA — 189 EUR · 137 hp GA+ — 189 EUR · 137 hp |
Select → | |
| 1.5109 hp / 145 Nm | +13 hp+17 Nm |
GA — 189 EUR · 122 hp GA+ — 189 EUR · 122 hp |
Select → | |
| 1.395 hp / 125 Nm | +11 hp+15 Nm |
GA — 189 EUR · 106 hp GA+ — 189 EUR · 106 hp |
Select → | |
| 1.175 hp / 100 Nm | +9 hp+12 Nm |
GA — 189 EUR · 84 hp GA+ — 189 EUR · 84 hp |
Select → | |
| 1.164 hp / 92 Nm | +8 hp+11 Nm |
GA — 189 EUR · 72 hp GA+ — 189 EUR · 72 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:
Smart ForFour 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
- +29 hpbest in this generation
1.5 CDI 95 hp → 124 hp. The other engines gain at least +8 hp; check the table for each one.
- +63 Nmfor diesels
Diesels gain mostly torque: +48 to +63 Nm, which helps with overtaking and towing.
- up to +12%with the GAN GA+ on naturally aspirated engines
For 5 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.
Smart ForFour remap: common questions
Which tuning box do I need for the Smart ForFour?
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.