E38 GM SPS Programming

[edcmat-l1]

I have a pack of them.
2 E38 and 1 E67A with one dead knock sensor channel
3 E38 with dead 5V reference #1 (caused by faulty AC Pressure and/or Fuel Tank Pressure sensors with excessive current drain but not enough to trigger overcurrent protection and 5V regulator is simply overheated)

Never seen any of that. And I'd have to question all of it unless I diagnosed it myself. No offense. I know you're a smart guy. I just don't take anyone's word for anything when it comes to diagnosis. No diag guy worth their salt should.

[blindsquirrel]

You have HP Tuners, right?

Do this. Post the tune file from the original (broken) ECM, and a short log file. The log can be as little as 10 seconds of nothing but key on engine off, I just need to see the 'Details' tab. Then do the same for one of the freshly-SPSed ECMs, tune & log.

[CRTD]

OK here is the update.
The original ECM definitely failed-EVAP Vent solenoid circuit failure P0449. It was stuck "on" in the ECM.
The replacement ECM programmed with latest calibration was actually a success even though it ran bad. Vent solenoid ckt working as designed.
The problem I was experiencing, the reason I questioned the SPS programming, was apparently related to DOD. So I started looking into that.
The final, main issue, was that I failed to notice the DOD had been disabled in the bad ECM. Car owner had no idea. Licensed the thing and disabled the DOD.
Summary. Turned out to be a simple thing after all. Maybe this lesson learned will help somebody else in the future.

[blindsquirrel]

If the first post had been:
"Hey guys, got this thing where it runs on this tune file (file#1 attached) but doesn't on this tune file (file#2 attached). What's up?" and somebody opens the two files in Compare and looks at Comparison Log and there's the answer right in the first reply.

[CRTD]

Yes that is ultimately how I figured it out. This was supposed to be a straightforward repair. Not a tuning issue. Turns out it was both.