real slow ... ex: if i brake for a second then give it gas it jumps forward... its not normal in a way... im afraid i going to hit something in front of me... any idea or normal for the X?

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1st 2008 X5 3.0 in alpine white/saddle brown in USA

(had)2001 x5 3.0i dinan engine software,dinan trans software, dinan throttle body