Thread: Why N54 and not N55 in 1M?
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      01-31-2011, 01:35 AM   #5
Drillslinger
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Drives: BSM 1M / R53 / E91
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2011 BMW 1 Series M ...  [9.00]
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IIRC the N54 is twin turbo without valvetronic. The N55 is single, dual-scroll turbo with valvetronic.
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Last edited by Drillslinger; 01-31-2011 at 11:23 AM..
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