Do you mind giving some history of the issue, how it was discovered, symptoms you noticed etc. It just helps out people who are searching through the forums when trying to diagnose problems.
As far as Turbo failures go this is probably the 2nd or 3rd report we've seen in the forums about a turbo going bad. One was an impeller failure and the other was an oil issue of some kind both had their cars tuned,
the first person was running a very aggressive tune but it's unlikely the cause of the failure. I think you just had some bad luck, we have a fair number of community members that have been running tunes for 2+ years without any turbo issues.
This isn't a common issue with the platform so we don't have any TSB or any official notice from Infiniti that would provide a VIN/Model ranges being affected.
I know the Q60 forum has a thread where one member spoke to an SA and they stated turbos having to be replaced frequently but
they only represent a single shop and provide no details on the trim/engine/model that was having issues.
Not to mention it was a thread for a year ago and there has been no updates since, these turbos may have issues later on in life
but right now there isn't enough high-mileage cars on the road to really say either way.
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