it's probably loud and extremely nasty because he has 3 inch custom piping...if you had the full cat-back from 5 zigen it wouldn't sound as obnoxious...plus, he must've felt some power-loss with that big of a custom piping job? i dunno...that's what people have told me....djkai said:in my opinion, the 5zigen fireball doesnt sound good at all. my brother has it on his 98 altima wit 3 inch custom pipping. its loud but it sounds extremly nasty. i dont know much about the dtm.