View Single Post
      02-16-2012, 12:51 AM   #10
clarence
Lieutenant Colonel
43
Rep
1,544
Posts

Drives: F30 328i M-Sport
Join Date: Mar 2006
Location: Hong Kong

iTrader: (0)

Quote:
Originally Posted by E90Fleet View Post
Software does the power limiting
I think there are some internal differences. For a start, the engine model code is different (N20B20 vs N20A20), some engine parts are different (e.g. different part #'s for the turbo, engine block etc.), & they have different compression ratios.