Originally Posted by visualguy
I meant I6 - too used to typing V6!
Haven't heard of longevity issues with forced induction BMW or Audi engines. Direct injection has caused problems, but that's unrelated to FI.
After driving a turbo BMW and supercharged Audi, there's no way I'm going back to NA! FI is more fun on public roads, and I don't go to the racetrack.
A high strung NA motor will definitely see more wear than a motor like Audi's 2.0T because of the higher stress levels (high revving, for example). Not every motor is running 20+ lbs of boost. Forced induction on it's own =/= shorter life.