Hey, so I have a Si rear sway bar sitting in my garage, just need to buy end links, and I was wondering if it would be worth putting it on my ex? It's a 99 ex so it has a 22mm front sway bar already, but I have koni/gc suspension and barely any body roll when I take corners quickly. So would a 13mm bar even make a difference in the back? would it help a bit with understeer or is 13mm too small for anything other than stock suspension?

 

normally i would always say yes.

if the car handles good, then no, i know a few people with koni/gc and they removed front and rear sway bars and would never think of going back.

 

On track, swaybars can be a detriment.

On the street, they're a good thing. Unlike stiff springs, they don't make as much of a compromise in ride comfort. It won't make a much of a difference in total body roll with stiff spring rates in use, but it will make the car more responsive.

Put the bar on. Even a small bar is better than no bar. And if you find that it makes the car too loose, then take it back off. If you already have it, might as well try it and see if you like it.