As Fred says, "no".
The add-on horn pack produced by Fred and myself is approved by Vstep for use in the simulator.
It is a set of horn sounds, designed to replace the existing default set and carefully designed and tested to be realistic when played back via a "good" sound system (wall-shaking!). It comes in a self-installing package and has the ability to roll back to the default sounds if required.
There is already another active thread for this subject, so I will lock this one, to prevent confusion.
