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Odd engine note change

Discussion in 'A4/A4 cabriolet/S4 forum(B6 chassis)' started by AudiLeon, Jan 29, 2010.

  1. AudiLeon

    AudiLeon Well-Known Member
    VCDS Map User

    Nov 24, 2009
    Likes Received:
    Firslty I know reving your engine when cold is a no no. Its not something i make a habbit of.

    But over christmas I started my car up and it was sat idling nicely away. When i rev'd it to 3k the engine note changed and sounded like it gained more power. Almost like a oil burning vtec. When it warmed up it didn't do it.

    Any ideas?

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