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      03-22-2007, 10:29 AM   #3
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Drives: 2013 BMW X3 35i
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Originally Posted by mkoesel View Post
12:1 is childs play. If it had HPI it would be 14.2:1 like the N53.
which engine is the N53 again? I know the N52 is valvetronic and naturally aspirated. N54 is the engine in the 335i. What is N53?