Welcome to the community.
Im gonna be a DAD for a moment then I'll help you fix your issue.
When you buy a new car (or one thats new to you) you need to treat it like a wild animal. Show it respect and approach slowly, learn how it moves and what it does when its happy/mad. Understand its strengths and its shortcomings, Not to sound like a hippy but you need to be one with your car BEFORE you go out and smash yourself into a pole.
I know its not new but I still recommend a break in period. Keeping the RPMs relatively low, cruise control off and just drive the car, take it for highway drives and around town, Burn a few tanks of gas before you really step on it. That way when you need to make reactions your not all over the place.
On to the Fix
For many drivers who are new to Subaru there is a whole new driving method to learn. AWD handles totally differently than anything else on the market and when you get the hang of it theres no going back.
Under steer in many cases can be corrected by adjusting your braking curve to pre-load the front suspension. You can do that by braking into the turn slightly later and releasing more smoothly. When Im teaching people how to drive I tell them to feel the energy of the car pass your outside shoulder then take loop around your back as your turn. Its not the easiest thing to explain in text but think of a giant pendulum over your car while you drive.
There is also the possibility that your suspension is 140k miles old and it may be hindering your cornering performance. If you learn how the car drives and you feel like the ride is bouncy or rough, suspension is the first thing to look into. Start with the struts and make sure everything down thereis working correctly. Once you know that the suspension is in proper working order you can correct some under steer by correcting the body roll that allows the front inside suspension to open up. That usually means thicker anti-sway bars front and rear with a more aggressive setting in the rear. In most cases a 22mm front and a 24mm rear will make the cornering feel more neutral. I always recommend whitelines for sway bars just because they are so easily adjustable and pretty cost effective ( dont skimp on end links though)
TLDR - Take some time to learn your new car, and try transferring the weight to the front more when you are turning. If that doesn't help try swaybars : )
Again welcome to the community, If we can do anything to help let us know.
13 WRX Hatch - Cobb OTS Stage 1
Last edited by arcticscythe; 08-01-2014 at 06:29 PM.