Purchased my first Subaru about 3 weeks ago. Coming from a 98 Toyota Tacoma that i have owned new since i was 17, this car is a beast.
I had made an offer with the dealer to sell the car with an Magnaflow exhaust. But it was not in stock when I bought the car. So i was able to drive the car without it for a while. After installing it i was not impressed, the car actually performed worse in top gears (sluggish). Did my research and found out that magnaflow did not have an exhaust out yet for the 2015 (2.0L) yet and the dealer ordered one for the 2014 model (2.5L). so i presented this to the dealer and they removed it right away. and now they are getting some other options for me to look at for a replacement.
other than that, i have only tinted the windows (20%). looking to replace the stock radio soon.
Subaru WRX by WudChuK, on Flickr