would you both say that u would prefer Haltechs to FC Commanders? or does anyone out there tried both and have a preference?

Haltech is pretty serious EMS. I know quite a few with it.

If you're just planning on fuel modification, FC com will just be great.

The Power FC is a fine unit to use. I do prefer the Haltech or Mircotech Units over the Power FC though. They are not that bad in price & have many functions for control. The unit in itself is just part of the equation. Without a good tuner or someone familiar with the unit it's not going to help. There are a few nice units out there like the HKS Fcon V that you may have a hard time finding tuners that have the software to tune & then there is the all mighty Motec units which are top of the line, but the price is up & tuners are not everywhere.

alright awesome thanks boosted and rocket i appreciate it all this really helps out a lot and im sure some other members and guests got a bunch outa this too

I made a list of some different options out there as far as EMS goes.
http://www.rx7forums.com/forum/showthread.php?t=2194

You can also take it to a good service center i am sure they can support you well.

I agree with I would highly recommend getting yourself a shop manual.