[JFP in PA]

The Turbo uses a unique engine, called "the Metzger engine" after its designer, which does have a lay shaft, but it is entirely different than the M96/97 engines and quite bullet proof. If the dealer says they have updated the IMS, it either is not a Turbo, or the dealer does not know what they are talking about..............which is not uncommon for many dealer's sales staff.

I'd ask to see the service records for the car.