If you've got an LSD (they're stock on the SE, right?), removing the rear bar won't make as much difference. It's not about over/understeeer, but about keeping as much weight as possible on the inside rear tire, for better acceleration out of turns. With an open diff, a fast auto-x car will have a healthy amount of understeer, which you have to learn to deal with.

When we ran our FBs in Showroom Stock we weren't allowed to remove the rear bar, so we cut it and hid the cut under one of the bushings. Good for about a second a lap.

 

Hahaha nice. It's not cheating if you don't get caught right?

 

It was just a clean break right!? heh.