Due to overwhelming pressure I decided to go out in the rain and get a quick vid/sound clip of a warm start, mild revving (3k) then more (about 5k RPM).
Notice the mild idle sound ie pretty tame at stop lights, driveway etc and the "brap" upon higher revs. Have not noticed this while driving hard so either you cant hear it inside or doesn't do it under engine load?
Will add cold start another time.
[u2b][/u2b]