duffman04

Just curious if everyone else's 8spd 958 turbo does not rev match smoothly? I took mine in for the transfer case last week and got a 2020 cayenne base with the same trans as far as I know and it downshifted nearly perfectly, similar to the PDK in the Macan. I have a Fabspeed tune on mine so not sure if that somehow affected the transmission tuning.

Quadcammer

not quite sure what you mean as automatics don't rev match in the traditional sense given the obvious fluid coupling. Pretty much all of shift feel, speed, etc is computer controlled at this point and generally the shifts are smooth, but not very snappy. Its a slush box thats generally tuned for comfort rather than outright performance.

duffman04

I am just meaning at what point did the transmission programming change to blip the throttle to rev match on downshifts. My'12 does it very slightly but its largely just putting it in the lower gear and then the motor is forced to match the revs for the speed. The 2020 base rev matched and blipped the throttle really nicely on downshifts.

spyderbret

It looks like it's actually a different transmission.

958 - 8-Speed Aisin Tiptronic S automatic
9YO - 8-speed ZF 8HP series automatic with Tiptronic manual shift mode

I'm guessing the ZF transmission is more advanced and can do the rev matching stuff where the older ones do not. I'm sure there are more specifics that more knowledgeable people can contribute but there you go.

duffman04

Thanks! Thats probably exactly it. For some reason I thought they both had the same transmissions.