What do I need
I would suggest HP Tuners, I use it all the time, get on very well with it, certianly I would recommend it. Mind you its about the only logging program I used apart form EFI Live, but I had an early version and I dont think it was complete as couln't change anything only do logging.
For regular logging you dont need the EIO, this is only if you want to add external sensor,s like a wideband read out, but there are other way round not using the EIO, I use the EGR input for my wideband, therefore was free. :O)
You would just require the VCM Suite GM Std. $499.
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For licencing info and finding out how many it will support it would be best to post on the HP tuners forum.
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