Hello dear community, I am now proud owner of a SEAT Leon ST Cupra 290 and think about doing a little bit of sound. I want to make one of them a bit louder and more toxic, but the system should be visually inconspicuous, high-quality and also no problem for the TÜV. I want to deactivate the push-off, I am aware that you do not get this registered and some companies offer the push-off only in certain Do you have any tips, suggestions or experiences?