What do you guys think of this product

[greentruck]

Guys, Im putting an LS6,4L80E,NP205 in my restored 72 K10. I am to the point of re-assembly. This motor was purchased with only the LS6 intake. No injectors, fuel rail, TB etc. I have been purchasing all these parts separately until I ran into this.
http://fitechefi.com/products/ultima...ction-systems/

It seems simple, clean and easy to use. I know it doesn't have an OBD11 port. Although I've learned a lot reading through all of your threads it is still new to me. Any obvious disadvantages? They say "self learning ECU"? Could you still dyno tune this set up or are you stuck with the "self learning tune"?
It looks tempting. Thanks in advance for any advice.