Will add that I have test pipes (had a shop V-band them) and Corsa, as well as a tune that kills the cold start. Very mild start up and while cruising, great wail as you rev it out, no smell and minimal to no drone. Though if I reset adaptations on the car, it idles pretty loudly.
I had a 2.5 pipe mod on my old car, and contrary to comments I saw, it droned quite a bit for a few 100 miles. Once it broke in, it was fine.
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