There is a certain paradox in that P-Tronic manufactures high technology additional box-units but they can be fitted by anyone. The reason is simple. It is linked to the intrinsic qualities of the product.
With P-Tronic, the connecting plugs for all the additional box-units are identical to those of the car manufacturers. This makes placing the box-unit extremely simple and makes an error in connection impossible. There are no wires to be soldered, no mechanical parts to be dismounted. The installation is a simple matter, in the majority of cases, of connecting plugs, and it takes less than five minutes.
Each box-unit is supplied with illustrated fitting instructions with clear explanations which leave no room for doubt, even for people who have never opened a bonnet before...
As an option, a cable permanently connected to a switch enabling the box-unit to be activated or deactivated can be supplied. But it is rare for users to install this, because the permanent effect of P-Tronic is the best guarantee of having extra power available at the moment when it is really needed.

Example of illustrated instructions for fitting a box-unit

« Child's play, not requiring any knowledge or technical aptitude » - Federauto Magazine

« Whereas previously, the preparation of an engine necessitated substantial modifications, the P-Tronic system is simple and easy... the box-unit is fitted with connectors specific to each brand and each model » - Union & Actions