I researched that product before taking delivery of my car.
I loved the test drive (with the exception of the throttle delay software fault) and was fully prepared to buy the sprint booster for my brand new car.
Fortunately my '13 had the updated software the throttle is smooth from zero km/h on.
I'd suggest you try a different dealership and request that they apply the software update again (I say again because who knows if the dealership you deal with just didn't say they did the update when in fact they hadn't.)
Here is a link to my earlier post:
http://x3.xbimmers.com/forums/showpo...3&postcount=23
Quote:
Originally Posted by geordie
That sprint booster fixed the jerkiness?
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