Quote Originally Posted by DDam
Something I found out the hard way, when you change your coolant, make sure you add the subaru coolant system conditioner or you may get headgasket leaks. But enjoy the new rider, they're fun.
True for the older EJ25s but most of the turbo motors dont have issues running without it.

Dont waste the money on an AP, spend the money on a custom tune using ECUedit. Your car will run much much better than with an off the shelf map.