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As per the coders (alex and Kubax) the diff coding is either GTS or Base. CS is GTS. ZCP is Base. The difference is in how the computer tightens the diff's ball gate to apply the locking plates during use. The track boys seem to feel the GTS/CS maintains better traction coming out of corners under power, possibly due to the diff applying some progressive lockup soon as the DME feels the corner angle decrease.
I also just heard from BMW that there are 2 different rear drive ratios, one for DCT and another for 6MT…in case anyone plans a diff replacement.
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'18 F80 Base 6MT | '19 F82 Exec DCT | '18 F82 Comp Exec DCT | '23 G80cx
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