Updating this topic. It can be closed. I have a working engine under the hood now.
After I relocated two wires for the grounds I got a MIL. The D14 was missing some sensors witch the D15 had.
So I had working ECUs that were better than the D14 under the hood. Only solution I was thinking of was a engine swap.
Cause the D16 was already waiting and the D15 had to be dismounted first I went for the vtec engine.
On a saturday spending around 11 hours I had dropped in the D16Z9. I left the original gearbox for now. It's 9A. Let's see how it handles.
This weekend I worked on the wiring. D14 had two plugs under the hood. D16 engine wiring had 3 and D15 had 4. Not sure why so many.
There are some things to do. But the engine started.
armin81's post in Engine wont start was marked as the answer