So let's say I'm doing 50 mph in a tight bend in the road; right in the middle of the curve, there is rough line/break in the road that extends from left side to right side and is quite pronounced (like a really small but powerful speed bump); in my previous cars, hitting that bump would cause the rear end to skip and hop sideways quite noticeably, my last car (Jeep GC) it didn't, and neither does my truck.
Just curious if adding this swaybar would have any effect on a bump like that; right now the bump is controlled extremely well, but would this stiffer swaybar make the bump worse or would it have the opposite effect and maybe control the skip even more?
It could, especially the tighter you set up the Hellwig. Aside from being a solid, stiffer bar, the three adjustment holes are awesome so you can tailor it to your driving style.
The "tighter" your suspension (all components) the more extreme it's reaction to irregularities in the road. That, along with the power, is why so many brand new sports cars wind up in single vehicle accidents. People are not used to the reactions the suspension will throw at them.
The opposite would be a "loose" suspension which soaks up all the road issues and let's you drive stupid and happy. Think cars from the '40's you've seen driving. The downside is that they did not go fast or dodge much traffic and so no one would buy a vehicle with that much play in it today. That leaves us somewhere in the middle of balancing performance with real world road handling. Most stock trucks are on one end of the middle and affordable sports cars are on the other middle end. Adding this sway bar, especially on the tighter setting, lets us move the truck handling a little more towards the middle.
This is the liability reason why Hellwig advises you to start in the loosest position - so that you can get used to it. Once you know how the suspension change drives, you're far less likely to wind up on the news.