Short answer: Citroën Ami Tuning at Stefanel Performance removes the serial limit of 45 km/h to up to 80 km/h and increases power from 8 to 14 HP (39 → 44 Nm). We optimize the VCU3000 control unit via bench — without opening the housing, IP protection remains intact. From 333.33 €, plug-and-play from stock.
→ Order Ami optimization now · All info: Topolino, Rocks-e & Ami
The Citroën Ami is factory-limited to 45 km/h — software-side, not technically. The electric motor and control unit can do significantly more. With our software optimization, you get exactly that — with the Ami as well as with its sister models Fiat Topolino and Opel Rocks-e, which use the same technology.
What Stage 1 specifically brings
| Key figure | Series | Stage 1 | Plus |
|---|---|---|---|
| Power | 8 HP | 14 HP | +6 HP (+75 %) |
| Torque | 39 Nm | 44 Nm | +5 Nm |
| VMAX | 45 km/h | up to 80 km/h | +35 km/h |
You particularly notice the increased torque on inclines: the series noticeably breaks down on hills — Stage 1 pulls through smoothly. In city traffic, you drive confidently instead of causing traffic jams behind you.
Without opening — the crucial difference
The Ami's VCU3000 control unit sits behind the bumper and is permanently exposed to splashing water. Other providers drill a hole in the housing and then seal it with plastic — precisely where water gets in, precisely what destroys the water-sensitive ECU. We are the only provider worldwide that can read and write the VCU3000 via bench without opening the housing. The waterproof housing remains closed, IP protection remains intact.
Variants & Prices
| Variant | VMAX | Send in own ECU | Plug-and-play |
|---|---|---|---|
| VMAX only (no extra power) | up to 53 km/h | 333.33 € | 888.88 € |
| Stage 1 + VMAX | up to 80 km/h | 699.99 € | 999.99 € |
| Stage 1 + VMAX capped | 50 / 55 / 60 / 65 km/h | 699.99 € | 999.99 € |
Two ways to the goal
Send in your own ECU: You send in your control unit — we process it on the same day via bench and send it back. Install, done.
Plug-and-play: Pre-programmed control unit from stock — old one out, new one in, drive off. No need to send it in. This offer is exclusively available from us.
Vehicle from 2026? No problem.
With the new 2026 data status, all other providers fail. Our plug-and-play control unit still works — open VMAX and full power in the 2026 Ami. We are the only ones worldwide.
Battery temperature: how to get the full VMAX
Top speed is a matter of battery temperature — pure physics, no software limitation. Full power is available from approx. 15 °C battery temperature. When cold, you start a little more moderately, and as soon as the battery reaches operating temperature, you get the full 80 km/h. Drive for a short while to warm up, then your Ami delivers.
Does this also apply to Topolino and Rocks-e?
Yes — Fiat Topolino and Opel Rocks-e use the same VCU3000 control unit, the optimization is identical. All three vehicles at a glance →
Range & Reliability
With normal driving, consumption remains practically the same — you even drive more relaxed because you're no longer constantly at the limit. We stay within safe limits for motor, controller, and battery — reversible, no extreme values, results in factory quality.
Order now
→ Citroën Ami: Select variant & order
→ Overview page: Topolino, Rocks-e & Ami
Phone: +49 (0) 8031 409 2134 · WhatsApp
Note: The software modification is intended for motorsport and export purposes. The customer is responsible for the area of use.
