The factory setting comes out to about 3-4mph fast. When I plugged in a OBDII reader and watched the readings, I was going 4mph at idle sitting in the garage so Porsches don't just "look" fast when they're sitting still.
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1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top