Same here. Noticeable loss of power over the last couple weeks and then last Friday got the low boost code (2c57?). Have an ER charge pipe on the way from n54tuning. Car is cpo but I didn't see the point in dealing with the dealer to replace a broken part with a flawed design with a new part with the same flawed design. Only mod is a jb4, car has 56k miles.
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