Here is the easy guide on generating Subaru 82G transponder key with xhorse vvdi key tool max and super chip xt27.
ID70 – ID83 (80 BIT)
SUBARU 82G (80bits)
Then program to car with xhorse vvdi mini obd tool or other OBD programmers.
If xt27 super chip key failed to start engine,
1). Try generate chip again
Try putting the big end of chip closest to ignition coil.
Especially on ford
There is only so much space in the chip
Sometimes the signal isn’t strong enough.
Sometimes you need to try another chip (i.e Keydiy chip, handy baby chip)