Interesting - 2012 with a manual? The V6 engine model? No air suspension obviously.
Generally, shorter springs require a higher spring rate to keep the car from bottoming the suspension. A higher spring rate will result in a more "bouncy" feel unless you also upgrade the damping (shocks, struts) at the same time. Are the Sachs shocks you're considering "performance" shocks? Adjustable would be very nice. You want greater compression compliance and rebound resistance increased - that should get rid of the bouncy feel.
Generally, shorter springs require a higher spring rate to keep the car from bottoming the suspension. A higher spring rate will result in a more "bouncy" feel unless you also upgrade the damping (shocks, struts) at the same time. Are the Sachs shocks you're considering "performance" shocks? Adjustable would be very nice. You want greater compression compliance and rebound resistance increased - that should get rid of the bouncy feel.
