I have two E36 M3s. One is supercharged with Dinan S3 Suspension (Koni shocks, dinan springs, dinan sways) and one is a modified N/A with Bilsteins/H&R Sport Springs/Turner Sway Bars (fat)

The Bilstein one handles on rails while the Dinan one feels unsettled at the track.

Anyone have experience with the Dinan S3 suspension and tightening it up. I am debating putting stiffer springs up front or a thicker sway bar. I like the way it drives on the street but its a bit loose on the track especially with 380hp. Also debated putting tckline coilovers only in the front with 400lb springs.

If anyone has insight or ideas. I am open to them.