The muffler arrived at my house with baffles not welded inside and it made an awful exhaust sound. I spent a lot of time trying to figure out what was wrong and went to an exhaust shop twice. I spent money to find out that the muffler was bad. I bought a Borla product and could not be happier. Flowmaster lost any future business from me. I really don't care if a worker had a bad day and wanted to play a trick and show his contempt for his job and boss.