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      01-02-2013, 07:27 AM   #1
Madill21
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Drives: '08 335i - BMS DCI, JB4
Join Date: Oct 2012
Location: Dallas, Ga


Posts: 98
iTrader: (0)

Exact difference btw JB3 and J 4??

Ok...so probably a stupid and old question. I just bought a JB3 off a friend and am looking up info on it but all that comes up is JB4 stuff or JB4 (stage 3) info.

Is that what the JB3 actually is? A JB4 (stage 3) and the JB4 most ppl have these days is a JB4 (stage 4)??

I haven't had this car for too long and am new to all the tuning/mod. I'm planning on putting this JB3 in this weekend along with a DCI
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2008 335i - JB4 / BMS DCI / Premium Package / Sport Package / 6AT