Just so you know, this muffler has nothing to do with an altima, the seller has multiple listings for these mufflers listing other vehicles in the titles.. This is a cheap generic bomb muffler which will sound like absolute crap, especially without some quality piping.. You get what you pay for
I bought one off ebay that was cheap, and so did acouple of my friends, and I must say that they have all sounded good. I mean if you pay $300 for one then it will obviously be better, but ifs thats the preice range your looking for they aren't that bad. but like he said, you get what you pay for
i had the same muffler for a couple months. just took it off today and got a ractive dual tip put on. the fireball muffler is loud especially after adding the stillen header. if you want mine i'll sell it to you. the quality is pretty good, but custom piping and a header makes a WHOLE LOT of difference.