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      01-04-2013, 08:05 PM   #23
Drives: E92 335i
Join Date: Dec 2012
Location: Michigan

Posts: 42
iTrader: (0)

Originally Posted by white08135i View Post
hmmm is there a big difference upgrading to jb4?
I've never ran a jb3 so I wouldn't know, but you do get updated maps so I would assume there should difference in drive ability and power. I just sold mine, but you should be able to find one for around $50
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