I think it's the perfect analogy for the S65. That engine was NEVER designed for boost. Boost significantly decreases engine longevity, just like steroids do to life. There'll never be concrete proof (on either case) some folks look for, but the sheer number of failed boosted engines so far is more than enough to prove that point
. Heck, these engines seem to be marginal (main bearings mostly) even without boost
. Good day gang.