Since I've rebuilt the 3.0 in my 92, I've been chasing around a couple bugs that I can't seem to figure out. I've gotten all the "not quite tight enough hose clamp" kind of things fixed but I continue to have 2 issues that are probably related, but I can't seem to solve.
The engine starts and runs smoothly, but seems quite low on power. It drives around town (flat) fine, but without much "punch". The power it does make is pretty even and smooth, no surging or flat spots, but it just seems weak.
No CELs or anything, starts the same warm and cold, etc.

The other issue is the timing. I can't get it timed to where I want it. Currently it is timed (with plug grounded) to about 10-15 BTDC. The distributor is maxed out in it's travel to get it to that point. I can't turn the distributor any further to get it to the correct timing. I've tried moving the distributor a tooth to try to get there, but I end up with the same problem on the other end of the scale, ie: it maxes out the travel on the slot of the distributor before it gets to the correct timing.
When I'm trying to time it, it seems like the timing jumps around a few degrees constantly as I'm looking at it.

I've disassembled the front of the engine a couple of times to confirm that the cam timing marks all are correct, and they are. And, it doesn't seem that the damper has spun, as the timing marks on the timing cover line up correctly after re-assembling the front of the engine.

I've done all the other things I can think of to figure it out, all the maintenance you can do is done (filters, O2 sensor, etc.)
I'm currently getting about 17mpg around town, which seems ok turning the 31's.

Can a failing ECM cause these problems? Low power and wacky timing?
I've been looking around for someone local with a 92-94 so I can do a quick ECM swap, but so far can't find one.

Thanks in advance for any comments or advice

Brian