My performance shop trashed it per my request. I kept most of my stock parts from my RS4 and never put them back on before I got rid of it. I traded in the car with all the performance mods and didn't have any noticeable impact, good or bad. Then I had to trash the unneeded RS4 parts a few years later. So this time around I just junked my stock exhaust and parts for my S6 right away. My experience so your mileage may vary...


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