Spoon Sports 11/17/2011Have you verified its coming from the rear? Because you just said "Sounds like it's coming from the rear. ". And yes, i have to agree, i only know of 2 things that chirp
I love the sound of a supercharger spooling by the way.
Anyway, if your benz dealer said its the supercharger, who am i to disagree, im online and didnt hear the noise first hand.