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I recently got an '11 E88/N55 DCT w/about 40k mi. It is bone stock, and don't know what updates have been put on but all its required service was performed by a BMW dealer. From delivery it had the dreaded launch delay and the terrifying RPM drop/surge w/AC on in traffic. There was no way I could let my wife drive it that way. I put the MHC Stage 1 DCT tune (w/only OEM CAT DP option checked) and reset all the adaptations. No more launch lag, no more RPM drop/surge.
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