Installed on my Challenger after the originals burned out. Much louder than I expected. I just took the Challenger on a 3 hour road trip. turned off my radio. Not happy at all. I hope to replace them with the Flowmaster but they are much quieter.
Great sound and everything you expect from a Flowmaster. Easy installation and excellent performance. Would recommend to anyone with a similar engine. (Ford V6 4.0) Moderately normal at idle and has a Flowmaster sound at highway speeds or under load.
Installed this muffler on my 2006 Subaru Impreza 2.5i 2.5i and it sounds great. not too loud either. definitely recommend to everyone! Update: After about 2 years the muffler cracked because it was completely rusted so it was replaced with a T904 which actually sounds better. I don't think I will buy a Flowmaster again.