Thread: performance upgrade?
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      10-21-2009, 05:52 PM   #1
Swains
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Drives: 2010 X6 50i
Join Date: Oct 2009
Location: Kuwait

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performance upgrade?
Hello guys,

I have questions about the "performance upgrade" for X6 2010. is it a ECU modification? can I add it later? since I already got my new X6. is there any side affect?

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