For this Legacy STI, says Subaru, the aim was to create similar performance levels to the Impreza STI, but in a more premium, upmarket package. It also came with the EJ20 2-liter boxer engine ...
Subaru made more improvements over time until ... The EJ22’s many variations were used in some form from the 1990 Legacy’s EJ22E all the way up to the 2001 Impreza’s EJ222.