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      07-03-2012, 05:27 PM   #25

Drives: Black '07 335i
Join Date: Mar 2011
Location: United States

Posts: 1,032
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Originally Posted by Dackelone View Post
YES. The N54 has forged everything. Pistons, rods, crankshaft, ect... Everything is stronger and costs BMW more to produce.

The N55 has all cast parts, which are not as strong as forged internals. This is the reason why almost every tuner only delivers (tunes) the N55 for 360 Hp vs 380 ~ 400+ Hp for the N54.
I thought so, its just been a while since I last looked into all that Ill keep my N54 Thank you!!!

on another note I wonder why they chose to massively rework an N55 rather than the N54