Nice pile of parts! No problem on cluttering my thread, its was already pretty bad
Are you sure that is a Vortec manifold? I was under the impression that vortecs do not have an EGR port so it would be pointelss for GM to have an egr port on the manifold. I'm not too familiar with the combo so I could be wrong.
I had the same problem when I first fired mine up also. Only took me 1 min to fix though cause I've been using serial ports for the last 18 years and can troubleshoot them really quickly.
The VE learn is pretty simple since you are using the stock NB sensor. After you have configured the EBL bin to match the specs on your engine, you flash it into the EBL. Then before you start the engine you start datalogging so you can go back and see all of the engine input info. Start the engine and then you go up to file, Learn Ve, and select the bin you are using, then it will ask you what to name the new bin, Its best to go with the default name (original name with new 001 number after it). After this just switch over the the Learn VE display and if it is learning, you will see a green marker with a changed number on the screen. If it is yellow it is not learning. there is a setting under options in th eWUD that tells the engine not to learn until the engine temp sensor reads a certain amount. it won't leanr until it reaches this temp.
Before you do this, you want to make sure you have the bin settings correct. You might be better off using one of the stock bins provided with the EBL first, since it should match what you already have.
Unfortunately I have not gotten into fine tuning yet, which is where you will be (you are still pretty stock) so I can't be of much help.
Just play with it a bunch & you will see how it all works. if you are still running a 1-wire o2 (I am) then the location is very important, and could really affect the learn since it will not be reading correctly. everyone really reccomend a heated o2. I would also advise installing an IAT (idle air temp sensor) if you do not already have one.
For plugs and wires I have a stock TBI harness from an 89 5.7l caddy that had the plug for the IAT, A/c and is also a great source of ECM pins for adding pins to the EBL as well as quality wiring. I would recomend finding a stock TBI harness from a TBI car since they have the best seletion of connectors. They might be hard to find or too much $$$ so if you want I could pull some pins from my harness and send them to you, then all you need is to buy whatever connectors you need off ebay.
This guy is a good source.
What kind of fuel pump do you have?
I fixed the bulk of my oil leaks last night so I'll be doing some tuning tonight. still needs alot of tuning, but its a beast!
If you run into any problem or would like some tips feel free to give me a call. I'll be available all evening.