Why does the car bounce so much after installing coilover suspension?

[AndrewLynn]

It may be due to the damping being set too stiff or too high. Coilover suspension adjustment instructions: The higher the spring seat height, the stiffer the spring performs, and vice versa; When adjusting the spring seat, the vehicle height will also change proportionally (definitely not 1:1); Only when the damping coefficient matches the spring can the highest performance be achieved; Damping is not the bigger the better - excessive damping will cause insufficient spring travel, resulting in severe bouncing of the entire vehicle; Adjusting the shock body height does not affect spring stiffness. Meaning of coilover suspension: Coilover suspension (Height Adjustable Damper) - derived from racing technology, refers to shock absorbers with adjustable (spring) height design; When the vehicle is stationary, the ground clearance at the four corners of the body has a significant impact on the wheel load at that position: Increasing the ground clearance at the left rear corner will increase the load on the left rear wheel and its diagonal wheel (i.e. the right front wheel), while reducing the load on the other diagonal wheels (left front and right rear wheels).