Speaking of Dïttinger Höhe, Dave and I made another comparaison of our cars.

991..2 RS non OPF vs 991.2 RS with OPF. 

Start in 3rd gear on automatic, 80 km/h, under the bridge. We both accelerated exactly the same all the way to the gantry. Not a cm  difference. Nothing.  Last year we tried and Dave's car with OPF started pulling away  slowly at 200km/h . But not this time. Full acceleration all the way to 7th and about 250 km/h


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 964 Carrera 4 --  997.2 C2S , -20mm -- 991.2 GT3 RS