Thread: Anyone can tell the difference between 30d and 40d?
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      05-08-2014, 11:39 AM   #8
greentrbo95gst
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Quote:
Originally Posted by phantomac2 View Post
Simply buy the entire engine (N57D30S1) from BMW – you could even tune it afterwards.
I thought the short blocks were all the same in the 30, 40 and 50
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