I am currently in the process of working with Grove-Design to get his WRX SSM program to work with our ECUS. We have ran into a bit of a roadblock of confirming/finding out what certain ECU memory address correspond to, especially with Twin Turbo Controls. If you are interested in helping please let me know by PMing me your email. You will need to build your own SSM to USB cable if you do not already own one such as the Evo Scan cable. To make one please go to this link to find a pdf with a how-to https://grove-design-service.com/ssm/ssm_wrx_en.html . You can get the FTDI cable off of Amazon https://a.co/d/daIkkF0 and the radio connector https://a.co/d/2YRtg7T . To connect them use 2 lever Wagos (https://a.co/d/gVwn7zW) and de-pin the needed wires off of the connector on the USB cable.