This muffler was a huge improvement over my Tacoma's monstrous OEM muffler. This muffler is slightly louder than the OEM muffler, it has a nice tone that is masculine but not overbearingly loud or annoying. I noticed right away that my truck became happier and happier after the installation. Less fun to install, that muffler was too big for my pipes (my fault) so I had to travel to Napa to buy adapters. I had to tilt the muffler vertically to attach it and also had to make a hanger since the stock hangers were welded to the muffler. Overall it was easy once I had the right hangers and adapters. If you don't have access to a welder, it's easier to install it in a shop. Be sure to find out the diameter of your pipes before ordering. Still great after a year and a half.