Tuning doesn't always mean an improvement...
Test result: 0-100 kph in 4.0 seconds and 0-200 kph in 13.7 seconds...with claimed 580 hp.
I clocked (PerformanceBox, three runs average) my factory loaner from 0-200 kph at 11.8 seconds. Claimed power: 540 hp.
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RC (Germany) - Rennteam Editor Porsche Panamera Turbo S (at Porsche right now), BMW X5M, Mercedes C63 AMG Coupe PP/DP, Mini Cooper S Countryman All4