So I learned about Swift springs, read the how and why and was sold. They're for performance. They lower only as much as benefits a lower CG but without impacting suspension geometry. They only use linear spring rates so you always know your rate. No guessing from progressive rates. They dyno the stock dampers and match the spring rates to those.
I installed my springs at a friend's house on Friday and the improvement was felt immediately. The drop seems to be about 1" or maybe a hair more. I didn't measure because I didn't care.
On the road small bumps feel less bouncy. Body roll is almost completely gone (I do have a TB Performance rear torsion bar). Ultimate grip is way up and the car is now tail happy again. (It lost some of that with the stock springs and the addition of the TB Torsion bar).
This morning I had a great blast through twisty roads with a Cayman S, Mitsu Ralliart and 3 modified Focus STs. The car performed flawlessly. My custom (built by myself and Boostbumps) e20 tune was rock solid with +6 corrections all around and the suspension was on point.
I love it.
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