I've heard the opposite. That x-pipes make a little more noise I'm not sure, I've never owned one so this will be my first. Yeah, I've done a lot of research with most of my time on you tube, but it seems everyone has a totally different set-up or has a different type engine. so its hard to find out. I've heard the 2.5" pypes x pipe with the violator muffler are very loud with no tone and i've heard they are not as loud at all with a great tone.... I've checked pypes website for the sound tones but was unable to get them to work. does anyone know of any other places other then pypes or you tube???(I think i've searched all of youtube)