So your resonator controls the pitch ad drone and a little bit of noise and your muffler reduces and sets the loudness of your exhaust. The metal you use can also play a factor. Deleting your cat in the mid pipe will add rasp and drone. To really get that loud sound at wot and quiet cruising you'll have to change out your muffler and resonator.I got a 2.5 inch exhaust right now Meagan racing catback. you can definitely hearing it coming but once the car warms up its not as loud as I would like it. If I just have the radio on I can't really hear it at all. Would like it to be louder but mostly on the deep side. Would switching out the midpipe make any difference. And also when you do turbo it what should be added for as less rasp and as deep as possible?