rsicard- I have been in the same boat with the engine running pig rich. the BPW is in the scalars. I believe that there is a calculator/excel file somewhere to help with this. I ended up telling the PCM that my injectors are larger than what it has in it due to my increased fuel pressure. Also the number your changing is a pcm based number, it will be somewhere around 10 and probably a decimal. You also need to make sure that you IAC is set to where it needs to be (there is a write up about this). I believe Mark said he aimed for ~20 counts.
edit... I understand your frustration that after 7-8 tries you haven't been able to see any progress, keep in mind that most people here have tried 10-20 times a day. There is a method to this madness, but the learning curve is steep. I have a 96 Vortec engine in a 95 pickup running TBI, similar issues, but we all have to work one step at a time.
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