(If you want "relatively" quiet, don't use the Dynomax Ultraflow mufflers. They're a straight-through design and are significantly louder than the standard Dynomax muffler that TTI offers (just can't remember that model's name at the moment).)
Are the ultraflows really that much louder than the SuperTurbos? Someone posted a chart a few years ago with specs on aftermarket mufflers, I don't have it handy at the moment, but it listed the db's and they weren't much more, and the X pipe will tone it down I'm hoping. Does anybody have any experiences with both? Thanks to the op on the post