Quote:
Originally Posted by Swains
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?
Thanks
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Most likely it will eventually be available thru a dealer. My guess is that it is just simply a flash done at the spartanburg that increases boost a little. If BMW was smart they would offer this for $1500 to all existing owners as well!