I've done all my own tuning with my car, from stock with a blower to a HCI blown motor and have had nothing but success. Not blowing my own horn, but just pointing out that it can be done if you are willing to learn and understand what make these cars run.
The main thing is like others said is in the computers. Most people have better success with a fox computer but if you know what needs to be done in the 94-95 computers then there really should be no issues. For example, in the above post about timing being pulled, its a couple settings that can be modified in 30 seconds and it gone. Again, it just really knowing (through research) what needs to be done, or have someone else do it.