Firstly this muffler is fitted to a 2009 Kia Optima. For me it works, looks good and sounds good. For the money it's hard to beat. The welds look sloppy and there are flaws, but as long as it works it doesn't matter, especially considering the price. The sound is audible but nothing disturbs the neighbors. It's not a loud A-hole, but it's a little louder than the stock muffler. I built and modified it to fit my Kia, but I've heard it fits right in the 2006 or 2006 generation Nissan Altima andโฆ