Koni special active dampers use their FSD (frequency selective damping) which supposedly separately controls low frequency (sprung weight - weight transfer of the entire car, except for knuckle/wheel assembly weight at each corner, under braking and in corners) and high frequency (unsprung weight - weight of knuckle/brake/wheel assemblies at each corner). This is what every damper does - they have low-speed damping (spring weight) and they have high speed damping (unsprung weight). I have not seen a damper curve (damping force vs. piston velocity) for Koni FSD dampers. So I can’t tell if FSD is more marketing vs. real performance.
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