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which trans turned out to be better overall from xhp. The 6 speed or the 8 speed zf???? my 135i with zf6 is a monster with xhp stage 3 crazy downshift blips and upshifts extremely fast.... Keep in mind my 6at has only about 30k miles on it as it was replaced by bmw cpo and i changed the fluid at 20k so maybe thats why it feels so good.. I xhp'd a friends 6at and sad to say his felt nothing like mine did, his shifted much slower so wear and tear does play a major role...
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