Forgot to mention, I had the resonator remove when I had the o2 bung installed. I don't like it. Its not that is that loud, just the wrong kind of noise. Bad noise right at 70mph. Quiet on the idle and at cruise at at other speed. Acceleration sound more aggressive but its just not my kind of exhaust note. This is coming from having two vettes with no mufflers at all. They sounded much louder but better that this. Might call the muffler shop to make sure they don't chunk the resonator.