I am a Saab guy. I am used to this. There was the 2.0t and 2.0T, nearly identical engines with differing outputs. Same with the b235r and b235e which had different valves and or pistons besides the ecu tune.
'98 M Roadster stg 2+ S/C @ 13psi +'13 EBII M Sport 328i 6mt BMS stg 1+