My boyfriend and my roommate both have Koni Yellows on their FiSTs and the cars have a totally different personality. Granted we have different tires as well, however the suspensions are all similar. We all have Swift Springs, they both have 6pt braces, rear sways, and koni yellows. I have a 4pt, B8s, rear sway bar, and a trunk brace. My car is decidedly more confident over long sweeping curves, but it does not have as much road feedback as theirs do. The B8s are great and I went way out of my way to get them, but I wish I'd just gotten the yellows.