A good friend of mine has run without a BOV on all of his SRs. Never had a turbo blow. Granted he has sold them all fairly quickly too. While compressor surge will shorten the life of the turbo, it will NOT do so in 5k miles. It does cut down on turbo life, but not by leaps and bounds. Plus, from what I've been told, it isn't that expensive/difficult to rebuild one; granted I've never had to do it, so I wouldn't know.
P.S. Surge still sounds FUCKING BADDASS!
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