Quote:
Originally Posted by epiphone3
As some of you may have seen on the General forum, I have been in a quest to see if it is possible to upgrade my Canadian 174hp 2.5 liter 2006 E90 323i to the 218hp Euro-spec 325i level.
|
I depends what year the 325i is. Since September 2007 the European 325i is using N53B30U0 (6100 RPM) engine. European 330i is using same N53B30O0 (6700 RMP) engine - 3 liter High Precision Injection (direct injection). 330i has 3 stage intake manifold, 325i doesn’t.
Direct injection is not intended for NA due to the high sulphur content in the NA gasoline.