Few locations...
- under ash tray flap (alongside cigarette lighter)
- above/below radio if you've swapped the standard unit for aftermarket single DIN.
- arm rest cubby storage hole
If you swap to a single din, a lot of people install a storage 'pocket' originally from the forester to make it tidy. Could put the EDFC controller inside that if you want to hide it?
Only issue i think they are the lighter silver colour of the earlier newage dash...
https://scoobyparts.com/subaru-impre...-impreza-92-07