So this past week when driving on the highway, at around 70-80 mph, my back end of my car feels like its sway left and right.. I feel like I have to keep correcting my wheel to make the car go straight. This started to happen when I installed a take-off sway bar..

Is the sway bar the problem? If so, why? Or is it my alignment?

 

maybe take off the sway bar and see if it makes a difference? its simple ya but it could give you a definite answer to whats wrong

 

That sounds like why it would do that, but I dont understand why.

 

ya, it shouldnt do that unless the sway bar was installed incorrectly.

 

Ugh, I hate going under the car -.-

The install was fine, it isn't loose at all. I really just don't want to take it off

Should I bring it to Ford and be bitchy and whine about the warranty (always fun) or go to an alignment shop and see what they think?

 

Lol, I would go to Ford for fun.

 

the alignment on the rear end of the mustang is not adjustable unless you have adjustable LCAs and a panhard bar. the sway bar shouldnt have moved the rear end at all.

 

It basically seems like my wheel is over sensitive to any movement.. like a slight turn will sway it off too much. what would that be?

 

sounds like you have a loose wheel.

 

Why do you have to bring this up when I'm days away from installing mine? LMAO good luck with this, let us know what the problem is and how it goes.