Unfortunately not alot you can do as far as I know.
It is worth trying to speak to the station involved but doubt you will get far.
Personally, I would just take it to the pits, pay the money and be on your way. If you take it back to subaru to get it rectified, every chance they will put a stock system on and then you need to shell out $$$ to get back to where you are.

There is a new DPI in osborne Park, yet to try them out. Most are bookings only now.