Question about Paxton EMU

Turns out The Paxton Engine Management Unit is a Split Sec FTC-1, on my Dodge kit. This is a good thing, because of it's port connection, it can be reprogrammed with Split Sec's R4 software.

Has anybody had any experience with one of these?

Hoping maybe to get a solid a/f ratio across the board, and pick up a few ponies along the way. It has a capability of retarding timing by up to 20 degrees, and fuel can be mapped on the primary injectors, as well as the auxillary injectors.

Here's a link to the info:
http://splitsec.com/products/datapdfs/ftc1ds~1.pdf

Anybody know about the tuning capabilities of these?

Any help would greatly be appreciated.