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      09-17-2008, 05:27 PM   #44

Drives: 2008 AW 135i
Join Date: Dec 2007
Location: Alabama

Posts: 1,000
iTrader: (0)

The N54 engine is heavier because it is built stronger. All alluminum with steel liners I believe. It was built to put out over 300hp. The N52 was not. If you design and build your own system you might be able to save some money in the short run. In the long run, you would be better off with the N54. JMHO