Ok so I just had some bassani mufflers installed on friday and they sound ok but kinda quiet. I expected them to be a lot louder. My flowmasters that I had before that I had broken in very well were louder. I'm thinking they need to be broken in and a bassani tech told me it takes 500 miles to break them in. But I remember opening the box and I noticed there's a quiet side and a loud side I think mine are on the quiet side. Have any of you guys ever heard of this?