basicly its like this, the only person that can tell you if its too loud is you. ( and from time to time the cops) but if you like it, leave it, if you dont, get something else.
i have a D15B8 running 2 inch with 2 short resinators and a IS300 muffler, it sounds deep, no rasp, and at 3200 up under WOT it sounds like its going to shake its nuts in a corvets face, lol but it still cant even get out of its own way,
its all about preception, i like low deep sounds for around town, if im beating on it i dont really care how it sounds ( when i do my B swap its a differant story)
just have fun with it