Wait, what the hell are you talking about? Reducing rear lift means you are not unloading the rear suspension. That is the whole point of reducing rear lift. In other words, not "lifting" the rear. Which essentially would put more load on the rear suspension.... :roll:
However, I also do not think you actually felt a difference. Especially at the current pace. That sort of mod is really only noticeable at the limit, which none of us are anywhere near.
Hear what I mean not what I say!
Rear bumper catches air, causes rear lift. Rear lift=less weight on rear tires. Add in braking, less weight in rear.
Now, cut rear bumper. Less air caught, less lift, more weight in back, more stability under braking.
Granted, we are probably talking minor figures here, but still.