around 6 months of being Turboed and still don't have problems. I'm even running 8psi daily....Just went from San Jose to Bakersfield and back with no problems....just have a check engine light that won't go away...
I am pretty sure my engine is on its way out the window.
I never overboosted. (never even saw 8psi). I never ran the car too lean. I never let my EGTs get close to 1600. I always kept my eyes on my gauges, and they were always reading perfectly.
Maybe I will be the first to truly lose my engine simply because of the fact that I strapped on a turbo.