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      11-13-2012, 03:01 PM   #8
Drives: E92 335i
Join Date: Jul 2012
Location: Springfield, MO

Posts: 303
iTrader: (6)

Yes this was on the same dyno. About the same boost on each I think the jb4 holds more to redline and peaks a little more. My car had/has no problems all I did was switch tunes....
2013 Race Red GT500 708whp
slostjoe is offline   United_States
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