Yes I have extensive experience with the Emanage. I think I was the first person to ever put one on a DSM, this was about 3 years ago back in July of 2002! I actually found an error in the GReddy documentation relating to the injector wiring, and had to tell GReddy their instructions were wrong.

You can check the Emanage Yahoo User groups and see my posts.
Ran mid 11s at 123-125 on pumpgas with it on a FP Green internal gate stock bottom end, full weight, ac,ps,radials, pumpgas, alky injected, daily driver etc. This was way back in 2002. Since then have graduated to an AEM EMS, bigger turbo, etc.
Always been a fan of going faster with less and extracting the most from a given setup. I -still- dont know of many 50trim cars that even trap 125mph today, 3 years later. Its not about what you have, its how you use it.
The PLX R500 is a datalogging device, not EFI management.