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On first-generation engines, the Garrett GT32 SST became infamous for overspeed failure. And even though it’s graced with an electronic wastegate, it isn’t enough to bleed off all the drive pressure created at those turbine speeds. The ball bearing center section simply can’t endure the stress. Even though all years of the 6.4 Powerstroke were problematic, the main year to avoid was 2008, which was the first year it came out. The 2008 model was plagued with problems that mainly involved the emissions