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      06-13-2012, 01:04 PM   #19
DavS1
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2011 BMW M3  [0.00]
Quote:
Originally Posted by m1bjr View Post
Depends if it is a turbo M-car, or not?
Not according to BMW, as per the handbook mate

Will obviously be more beneficial on boosted engines, but still requiered for high performance (high compression) engines to get maximum output.
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