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I did it on the bench and it seemed fine. I have not cracked open the valve cover on my E90 though.
Trying to get ahold of some Turner Motorsports N52 parts but no luck so far. Pete sent a head to my buddy's shop in Florida - so we'll get some data and head improvements at some point. I need to have one of my heads built, and put together the bottom end.. and a whole mess of other things.
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