Join Date: Jan 2010
Location: Southern California
Ok, here's how this works. A shock controls the spring. Without a shock, you would just bounce and bounce and bounce until eventually it stopped. horrible nonsense.
The valving in your FE1 shock is soft. It allows more spring travel and oscillation in compromise for a softer ride.
the Fe3 valving is slightly stiffer, making a compromise between performance and ride for a sportier car.
the FE5 system is the most aggressively valved shock setup. What you lose in ride comfort, you gain in spring control. The shock doesn't allow the spring to oscillate.
What you guys aren't understanding, and what a lot of people don't either, is the spring simply supports the weight of the car. A spring is rated in lbs. for example, stock SS/SC springs are ~400lb springs. that means it takes 400lbs to compress it one inch. Now, they're progressive rate springs, so its hard to measure them.
You springs support the car, and the stiffer they are, the better they withstand body roll.
your shock does all the work. It keeps that stiffer spring in check. A soft spring is lazy and bounces slowly. A stiffer spring will rebound much faster, and make your car seem to jump.
With a stiffer spring, you need a stiffer shock, or the spring is not controlled correctly.
Your FE1 struts/shocks are not designed for an aggressive spring, and will wear out quickly because they are overworked.