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Koni SA Shock Dyno Results
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Front shock data


Dyno Chart for Koni SA Front Shock - E30 M3 Fitment

The chart shows three colored lines. Each line corresponds to a different rebound setting on the Koni adjustable damper. You can tell the the adjustment only affects rebound damping because the compression curves pretty well collapse onto each other. This indicates that the damper exhibits the same behavior in compression regardless of its setting.

Also note the non-linear response of the Koni shock to changes in the rebound setting. The middle curve is one full turn back from full-stiff. Since their are roughly two full turns of total adjustment then the middle curve also represents a half-soft (or half-stiff) condition. But the fact that the middle curve is not centered between the full-hard and full-soft curves shows the non-linear response. Thus setting the adjustment half way between stiff and soft does not yield a shock with a mid-level rebound stiffness.

Jay Morris at Ground Control has had the Koni shocks apart and is familiar with the way that the damping adjustment is actually accomplished. Based on his knowledge of the internals of the Koni SA's he was able so suggest baseline settings that I could use to match my intended spring rates. He was remarkable accurate because the car handled like a dream on its first outing at Laguna Seca.



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