Thread: Running in 1M
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      03-29-2012, 03:35 PM   #16
RoadRunner///M
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Drives: 1M (Sold), M3 F80
Join Date: Mar 2011
Location: Sydney, Oz

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Do some long pulls in 2nd & 3rd gears with hot engine in first 20-50 miles on the car...essential to get good ring expansion & seating. Only a small window of opportunity to do this when the car has under 50 miles on it. 5,500 is pretty high in this engine anyhow, just go easy on the gearbox & diff... not hard runs from 0-60.