Cold start of 2011 Lexus GS450h (3.5L V6) with modified exhaust.
It's not a sport exhaust, but sounds a little bit deeper than stock.

Sorry for sound since half of the video - something happened to camera and started catching engine sound instead of exhaust :)

Exhaust from F.H.P. Pesla:
  / fhp-pesla-113327243795645  

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