The N54 was produced alongside the naturally aspirated N53 engine .
Both engines feature direct injection , variable valve timing on both camshafts ( called dual VANOS by BMW ) , an open - deck engine block , and an electric water pump .
The N54 was produced alongside the naturally aspirated N53 engine , and both engines feature direct injection , variable valve timing on both camshafts ( called dual VANOS by BMW ) , an open - deck engine block , and an electric water pump .