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Every X1 28i I have driven has this issue. Using DS or M kind of cures the problem, but there is still lag between when you push the pedal to when the engine computer finally decides to do something about it.
The only fix would be going into the computer and make it respond faster that way. Not sure if that's entirely possible though.
I'm beginning to think the problem relates to the ASS, to eliminate too much throttle when the engine is just getting back to run mode after the brake is released. That's just a theory though.
Once I get my JB4 installed, I'll let you know if the throttle delay still exists and if any improvement has been made.
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2011 E91
2016 M2 - Sold
2014 X1 - Sold
2002 Land Rover Discovery II - 3" lift & 33s
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