I had to swing by 2 bmw dealers here for something and both times I drove through the service bay, one SA asked me "I think somethings up with the cooling fan its running v loud" ... and I smirked, the car was just idling
second one said, " I think the car is running rich and that explains why your wife doesnt wanna drive any gas loaner lol" ... and I smirked again
Gotta love the D's deleted exhaust!! and all the stories SA's try to make