Jacking the car up from the side points, and lifting both of the sides tires up to the ground to change tires, I noticed the door doesn't close properly, or don't close at all until the car is put back on the ground. The other side that isn't jacked up closes properly. I checked to see if my doors weren't mis-aligned when not jacked up, but that's not the case.

Strut bars, and rear trunk bars will help? Or is it just a weak unibody design that flexes a lot. I can't imagine how much flex goes on when cornerning hard.

I auto-x a lot. The only stress bar I have is a neuspeed 4 point front upper bar. I've raced without and with, and it's hard to say it makes any difference at all.

 

i know that ur not supposed to open the doors while ur car is jacked up because that leaves a weak point for the car to flex and bend. i think almost any car will flex a little bit because of the extra strain that is put on it if u open the doors while it is jacked up.

 

The chassis is by no means weak, any unibody design will excperience some level of flex. It's true that it's far from perfect and there are many ways of improving rigidity, but comparitively, the Integra chassis is quite strong when compared to most other unibody cars.