10-04-2012, 01:42 PM
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#10
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Registered User
Join Date: Nov 2011
Location: texas
Posts: 172
My Ride: 330Ci ZHP 3 pedal
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Quote:
Originally Posted by cvx5832
Electric water pumps. They never have to move at engine speed. Reduced speed equals lower required pressure to keep bubbles at bay at the impeller.
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There's more to it though. The n54 electric water pump is variable speed and runs after the engine is shut off.
Point was the n54 cooling system operates a more traditional 1 bar cooling system.
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