Audi S4 Downpipe Exhaust & Stage 2 ECU/TCU (Aggressive Sound)

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➡️ Stage 2 Tune: https://carmaspeed.com/products/stage...
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Chapters:
0:00 The New Downpipe
1:50 Stage 2 TCU Install & Driving
4:26 Tools for Car Modifying
9:48 Downpipe Install
16:55 First Impressions Driving
21:38 Sound Check
25:47 0-60 & POV Driving

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