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Chiptuning / software optimization: Opel Rocks-e 5.5 kWh 8 PS (2022 ->)

By Stefanel Performance
999,99 € 1.090,00 €
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Legal Notice

It is expressly stated that the parts or equipment offered here are manufactured exclusively for racing vehicles. There is no road approval, authorization or authority within the meaning of Article 55 of Regulation (EU) 2018/858, to whose provisions reference is made. Parts or equipment as defined in Annex VI to Regulation (EU) 2018/858, which are used both in racing and on the road, may only be placed on the market for vehicles intended for use on public roads if they meet the requirements set out in the delegated acts referred to in paragraph 3 of this article and have been authorized by the Commission. Parts or equipment that may pose a serious risk to the proper functioning of systems that are essential to the safety of the vehicle or to its environmental compatibility may not be placed on the market or put into service. By confirming, you expressly declare that you have taken note of these instructions, restrictions and prohibitions. Upon receipt of the parts or equipment, you assume full liability. *
information on product safety

Manufacturer/EU Responsible Person

company name
Vizantin Trade UG (limited liability)

address
Jägerkampstraße 23, Kolbermoor, 83059, DE

e-mail
info@stefanel-performance.com
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Get more out of your Opel Rocks-e 5.5 kWh 8 hp – more acceleration, higher top speed, without opening your ECU. Stage 1 turns 8 hp into a genuine 14 hp and unlocks up to 80 km/h. Reversible, EVC certified – and exclusively available worldwide from us via bench access to the sealed ECU.

Why 45 km/h is simply not enough
  • In today's traffic, 45 km/h is often simply too slow.
  • Sluggish acceleration on 50/60/80 km/h roads is frustrating.
  • A queue of cars quickly forms behind you.
  • Others overtake more aggressively – and that compromises safety.
Stage 1 makes your mini EV faster, more confident, and safer in everyday use – without overdoing it.
No Opening Required
We read & write the VCU3000 via bench. The waterproof housing remains sealed, maintaining its IP protection – no risk of destroying your water-sensitive ECU.
Globally Unique
No drilling, no damaged cover like with other providers. On request, a ready-to-install plug-and-play ECU for self-installation.
Reversible
Return to stock at any time. VMAX freely selectable from 50 to 80 km/h or capped at 50/55/60/65.

What Stage 1 really delivers

Characteristic Stock 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'll notice the extra torque exactly where it matters – on inclines. Where the stock version struggles on hills, your mini EV with Stage 1 pulls through cleanly.

Performance Diagram

Stage 1 Stock
VT Dyno | 6/3/2023

Our method – no opening, no drilling

We were the first to develop the bench protocol for these ECUs: reading and rewriting on a closed device – without opening or drilling into the waterproof housing. Others drill a hole in the housing and then seal it with plastic. That's precisely where water gets in, leading to defects in the already water-sensitive ECU. Not with us.

Cleanly done – what we do, what we don't

What we do
  • Safely utilize existing reserves.
  • Cleanly raise torque and power limits.
  • Precisely adjust VMAX for your use.
  • Keep everything reversible – return to stock at any time.
What we don't do
  • No opening, no drilling into the housing.
  • No generic "internet files."
  • No unsafe extreme values.
  • No technically illogical speed targets.

Your options

  • Software on your ECU: You send in your ECU – we process it the same day and send it back.
  • Plug-and-play ECU: Pre-programmed (Stage 1 + VMAX), in stock, shipped the same day. Old out, new in, drive off.
  • 1:1 Clone Service: We clone your VCU3000 function-ready onto a replacement unit – something no one else can do.
  • Individual VMAX: Top speed capped lower if desired – e.g., for increased range.
Top Speed & Battery Temperature
Full VMAX is a matter of battery temperature – pure physics, not software. Full power is available from approx. 15 °C. When cold, you start a bit slower, but once the battery is warm, you get the full 80 km/h. Warm up briefly – then your vehicle will deliver.

Range, Consumption & Reliability

Range & Consumption
With normal driving, consumption remains practically the same – you even drive more relaxed because you're no longer constantly pushing the limits. If you drive at full throttle continuously, you'll use more power and have less range – as with any EV.
Reliability
We stay within safe limits for the motor, controller, and battery. No extreme settings that overload components – instead, a result of factory quality.

Frequently Asked Questions

Does the ECU need to be removed?
For the plug-and-play device, you remove your old ECU yourself and install ours – without special tools. For the software variant, you send in your ECU and get your optimized one back.
Can I choose any VMAX?
Yes. Freely up to 80 km/h or capped in 5 km/h increments (50/55/60/65 km/h) – depending on your use.
Can I revert to stock?
Yes, the optimization is reversible. We can flash back to the original state at any time.
Can the speed be switched at the push of a button?
Currently not. Many ask this – a clean button-based switching is currently not technically possible with these ECUs.
What about the warranty?
As with any optimization, we cannot rule out a possible loss of warranty. However, since everything is reversible, the original condition can be restored at any time.

*Please specify the year of manufacture before purchasing so we can guarantee the correct adaptation. The optimization is intended exclusively for closed, non-public traffic or racing events; it leads to the invalidation of the operating license.