4trac:

Re. the exhaust note change:  many exhaust systems on many cars have a "break in" of sorts, lasting several '000 km, where the metallurgy of the components changes due to a certain number of heat cycles. The "new" metallurgy often results in a different exhaust tone.   Is it possible that this could be part of what you are hearing?  

No, it changed right after I picked up the car at the dealer and mechanic admitted that car was connected to Audi diagnostic tool for at least half an hour. 


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RC (Germany) - Rennteam Editor Porsche 991 Carrera 4 GTS Cabriolet, Porsche Macan Turbo, Audi R8 V10 Plus (2017), Mini JCW (2015), Jeep Grand Cherokee SRT (2014)