Was on my way ot get my rims mounted and balanced on the z when I got on the turnpike and noticed a loud noise and my backpressure drop. I got to the shop and had the techs look at the exhaust, I had bent one of the mounting brackets off my test pipe when backing out of my driveway causing the weld on the bracket to crack causing me to have a open hole in my test pipe. My car is stock height and yes I do back out of my driveway at a angle do to it beeing so steep. Just be careful if you also have a steep driveway or this will happen to you