Popping and stuttering after Efi install and rebuid

Like I said I know a leak can throw off afr I'm just saying I've worked on many cars with exhaust leaks and it's never effected drivablity to the extent I am having. I have no exhaust leak anyway so that's out of the question.

It's a 1989 dodge d150 and it has no original wiring and the transmission has the harness cut out. Original Transmission works fine shifts great I'm swapping to a manual asap anyway.

If I had a spare 4bbl carb and distributor definitely would