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My car also makes this fluttering noise with a non res catback Miltek I had it on the ramp with a torch looking up the pipes with gentle revving as presumed it was the flaps but they are open and not moving (miltek delete module). The noise is either an engine noise being amplified or the baffles a...

Don’t know very hard to hear from video, but mine sounds similar I also have stock dps and none resonated exhaust, try wd40 exhaust flaps, are they properly closing and opens? In a video you drive in dynamic? How long you had exhaust installed? Which year of production is it? my car is a 2018, exha...

Hello everyone, I just installed a milltek catback non reso exhaust and I hear a very annoying metallic sound when decelerating at ±2500rpm Here is a link to a video https://www.dropbox.com/s/ahr924lddqzizlp/Vid%C3%A9o%202-10-20%2016%2015%2045.mov?dl=0 Possibly a DP failure ? RS6 C7 2018 Stock DPs I...