Dinan replacement turbos for BMW 135
Expensive! And all because of an original part that wasn't substantial enough:
"heavy duty wastegate pivot unlike the wear-prone stock wastegate pivot that commonly resulted in wastegate rattle."
http://www.dinancars.com/product/rebuilt-turbos-n54-e82-1m-135i/
Apparently there's an extended warranty covering this up to 80000 mi, but only if nothing has been modified anywhere near the turbo or air intake.
http://www.e90post.com/forums/attachment.php?attachmentid=733570&d=1344705341
What is the underlying problem? "Usual it's not the turbo itself that fails...but the actuator arms for the wastegates fail. They will not hold open and just dump the extra boost trying to be built up. They will rattle like crazy is a usual sign of them starting to go. Luckily each turbo is now only about 800 for the manifold and turbo assembled from BMW."
http://www.1addicts.com/forums/showthread.php?t=375357
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