I bought mine end of last year and its "rrrrRRRRrrrRRRRRrrrRRRRRRR" every morning at idle. If you have a quiet car and you appreciate chill rides to work in silence in the morning then the APR gauge is not for you. Some people say theirs isn't that bad but I think they just don't have the hearing sensitivity.
It makes me regret getting it slightly, but the no-tamper harness, not having to route a vacuum line into the cabin, and the fit and finish somewhat makes it worth the mild annoyance.