I've been fully modded and tuned for over 35K miles and have never had one issue with my car that can be completely related to running more boost. My stock turbos are still running strong, however, I finally have a seal leaking oil. Like any turbo system, parts will eventually wear out and fail due to stress, and they may or may not fail faster when running more boost. I know guys who needed new turbos at 20k miles running completely stock, I'm very pleased I reached near 60k with only a minor issue on 1 turbo.
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2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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