The sound of a flowmaster also depends where you put it. If it has pipe after it, then it will be meaner sounding. If it's at the end, it will just have a muffled sound, kinda ugly sound. A N/A B18 doesn't need 3" piping, you will actually lose power, however a H22 will actually have an increase in HP with 3" piping. If you're hardcore, you could go with a good header, test pipe, and buddy club spec 2 (the one with no resonators, mufflers, etc)