[RMcNeal]

Unloaded, it has no effect on ride at all. Truck rides the same as before. When under load, the Timbren's kick in and give more cushion. My main reason for going with them was to stop, or at least slow down, the porpoising effect when going over rough roads, bridge transitions, etc. The truck really didn't squat much at all with the Monte hooked up.
The Timbrens actually help the overload springs do their job better and smooth out the ride compared to just the stock bumps. Mine were installed with about 1/2" clearance with no load, so it doesn't take much load to activate them. When unloaded, really rough roads will feel a bit more harsh, but I usually try to avoid them anyway. Overall, I really like them and I don't have to worry about air lines leaking or expensive compressor setups, changing settings, etc. They just work. I think it cost around $250.00 for the hardware and easily installs.