Thread: N52 3.0 Si vrs. N52 3.0 motor
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      05-06-2012, 10:44 PM   #2
Johnny D
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Drives: 2006 BMW 325i
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Location: Hot Springs, AR

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2006 BMW 325i  [9.16]
Yes, the extra horsepower came from the three stage manifold and different ECU tuning.
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