\ There are numerous that are thinking about getting an aftermarket muffler for their car. There is a lot to pick from out there, all with their distinct benefits and sound. I bought the Flowmaster Super 40 Collection Muffler. Flowmaster claims it to be one of their loudest, high flow mufflers. According to xforce muffler "The Super 40 has that "deep effective" audio of the original 40 collection yet with all the benefits of performance as well as low indoor resonance from the "Delta Circulation technology." I need to state that I agree with the reality that it has a deep effective sound, however, the interior vibration is considerable. I have actually not listened to the interior vibration of a delta flow, however the Super 40 Series still has a fair bit of interior vibration. Related Tags https://sites.google.com/view/exhaustsydneyperformanceexhaus/ https://sites.google.com/view/exhaustsydneyperformanceexhaus/x-force-muffler-sydney ...