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      11-28-2015, 12:35 PM   #13
CERF04ZHP
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Drives: E90 M3 / F31 M-Sport
Join Date: Feb 2012
Location: New Hampshire

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Hey guys - wanted to resurrect this thread.

Last month my wife's X1 (N20) went into limp mode/reduced engine power a few times, so we brought it into the dealership. They diagnosed it as a faulty wastegate actuator and replaced it under warranty (17,500 mi). They told me the cause could have been brought on by "spirited driving". My wife drives like a little old lady. When I drive it, on occasion, I do lay into it a little bit, maybe passing on the highway or coming up an on-ramp, but I'm not banging it off the rev-limiter or anything.

Since the repair, it just doesn't feel the same. We just got back from a 500-mi. round trip and it seems like there's a lack of mid-range grunt. I have to press the accelerator down further in order to accelerate at the same rate, in any gear, as I did before the repair.

Has anyone experienced this? Could the dealer have recoded the computer or uploaded some sort of an output-reducing software in order to avoid a relapse?

Thanks for any input.
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