Scan and Tune software info help needed

I have a 1994 Pontiac grand prix GTP 3.4L automatic and need to find a tune software/down load simular to tuner cat and need a scaner simular to datamaster. Can anyone Let me know of any for my car? I have the tuner cat/datamaster and cable for my 94 z28 but it's not compatable with the pontiac.

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I think GM Tuners/Sinister Performance is your best bet.

Thanks, But I wanna diagnose the car off my computer and calibrate the eprom at home so I can check and tune the preferences. Are there any other programs I can use?

Will tuner pro work for diagnostic?