Why should the supplementary electronics also be set and tuned for each vehicle?

It's known in practice that there are minor deviations in technical features of the same vehicles depending on the their maintenance, mileage, fuel quality and the method and type of use. For these reasons, the default setting of Vector modules can't achieve the greatest possible improvement in engine performance.

By adjusting, the default settings your system was supplied to you on, you can further fine tuning the system to obtain the best results to suit your vehicle and your driving requirements.