Here's what I'm looking at:
1983 CJ7 with a donor 4.3L V6 (1989ish?)
Borg Warner T5 Manual Transmission (Non-world class 5 speed)
ECM - 1227747
PROM - AKMH

What I've done:
Replaced O2 sensor, CTS, IAC, plugs, dist cap, wires.
Removed, cleaned and re-gasket TBI.
Eliminated EGR (ran like hell with it connected even after I cleaned it and replaced the gasket).
Started Logging with Tunerpro RT - Lots of data, minimal understanding.
I've been chasing a smooth idle and better fuel consumption for about 6 months now and I'm at my limit of what I can figure out on my own.
Read so much stuff my head hurts!

Issues:
Error code 24 after engine gets up to temp which causes the idle to go up. As I said, I've read until my head hurts and, depending on which forum, I've found 2 different error code definitions for this - VSS or MAP.

Questions:
How do I fix the error code 24?
Would I be better served swapping out the AKMH Prom (Auto trans) with a APAB prom (manual 5 speed) or will it make a difference at all?
Do I need a VSS? I don't think there is one on there now.
What should I look at to improve my idle and fuel consumption.

I humbly ask for your help getting Bertha on the right track. Thanks, John.