^that's probably your answer right there.
cut lower springs.
on a side note anyways, your geometry of the car is now different, so the suspension components can't react to help you turn back anymore.
the difference between an actual lowering springs are the coils are coiled up alot more but you still have the same distance, its just the springs dont' compress as much to give you that lower stance, however it also gives you that bouncyness, hence the reason for shock absorbers to help absorb most of hte nasty bumps.
with a car like that, i'm surprised you choose to cut corners this way.