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08-10-2014, 10:20 PM
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#7
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Major General 
Drives: GT3RS
Join Date: Oct 2008
Location: probably work
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Quote:
Originally Posted by SteveMD
The 35i motor in the X models has a different computer to the 35i motor in all other models. The Stg 1 plug in will work but you can't use a full blown JB4 like I ran in my 335i.
I would question anyone that states they have a flash tune that actually works on the X. Not saying that they don't but not a lot of folks understand that the X has a different ECU.
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it was done years ago
http://www.xbimmers.com/forums/showthread.php?t=765514
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