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If I had to guess with those codes you have there, the ESS tuning is incorrect for the throttle control. Something in the code has to be setting those codes, as in, the truck is looking for a certain amount of throttle actuation, it isn't obtaining it, then it throws the boost code. Sounds like a definite ESS issue. Have you told them the codes your getting? It may be something wrong with your particular tune if you are the only one having the issue.
Keep in mind I am a mechanic, but not a professional BMW mechanic, some of the stuff I am saying is probably wrong, but just an idea.
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2011 BMX X5 Xdrive50i - 127K - No muffler, BMS Stage 1
2005 Jeep Grand Cherokee 5.7L V8-Her stock DD
1995 Ford Thunderbird 4.6 V8 LX - A bunch of mods BMW guys don't care about
1995 BMW 540i6 - H&R Lowering Springs, Bilstein's, Racing Dynamics Bars, Catback, Short shifter
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