Milltek turbo-back Installed: 2015 S3 w/cat, w/o resonator, w/o valves, Oval tips

amd is the best

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Quick clip I threw together of my newly installed Milltek turbo back exhaust system. This is with the catalytic converter, without resonator, without valves and with the oval tip option:

 
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Reactions: pat15312, mickv, xssiiv and 2 others
It does sound really nice, must say one of the best quality videos at the moment out there.
 
Sounds nice except for the upchange farts - they sounds very, well, farty!
 
Surprised you got front wheel spin on launch...

Same - I wonder if the ECU needed to "catch up" with the driving style. I wouldn't have expected any wheel spin on a 4WD car...though quattro is somewhat part-time 4WD.
 
I'd guess that you had ESC in Sport mode rather than ESC OFF mode?
In Sport it won't engage the rear wheels until it detects the need, in ESC OFF with the gearbox in S it engages the rear wheels all the time, giving a better launch generally.

Must say, the farts do sound a bit farty to me, but then you'd have to compare it to a standard S3 doing the same runs on the same day as I have no idea what my car actually sounds like from the outside on upshift :)