I placed it in my S4 (V6T) in place of the baby resonators and deleted the central muffler. Results are amazing! Nice screaming sound on higher revs. It's been on my car less than a month and there's already a some corrosion around the welds. He also swore up and down it was impossible to measure the center-to-center distance of the inlet and outlet pipes unless the muffler was off the vehicle!