does this sound nomal
#1
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2005 e55 black on black 07 e63 po30
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#12
I have similar sounds, took it three dealers and an indy and never said a word between any of them so they could remain objective and they all came back with the same thing...smog pump. They told me independently that the smog pumps can sound like anything from valve tap, to injector noise to another supercharger, depending on engine and ambient temps. They all told me independently to not worry about it as others on this board have been told as well. So for the first few months I worried about it, but now I just don't care, if it was going to blow up, it would have done it by now. Hope this puts your mind at ease.
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#13
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