I recently did the Technicpnp ASD bypass along with several rolls of sound dampening as part of a larger audio upgrade. Post install, the first few times in sport / sport+ I was shocked at how much fake sound had been added and how quiet the car is now (stock exhaust). Initially the car seemed too quiet because I was not getting the audible feedback but opening the window a crack addresses that issue. After several weeks driving the stock exhaust is definitely too quiet and will be upgraded to something with better looks and more growl.