Quote Originally Posted by Rich Z View Post
I think perhaps I have just been looking at Power Enrichment as something different that is not correct. I've been looking it as being the programmable equivalent of the accelerator pump on a carburetor. Back in those days, the manual accelerator pump would give an extra squirt of fuel directly into the carburetor upon spirited gas pedal pressure. I presumed that this function must be incorporated somewhere into the PCM tuning software, and PE just sounded like the logical equivalent.

Have I been barking up the wrong tree?

I believe I had PE disabled when I was doing what I thought was calibrating the MAF. Of course, I just now stumbled on that B0120 setting that I somehow overlooked, so I'm not even sure WHAT I was really doing....
Carburetor accelerator pump provided momentary extra shot of fuel to avoid transient lean when throttle butterfly was rapidly opened...

PE is different than this as you can see by its enabler tables.

Never disable PE during tuning, it provides enrichment when you're engine is at load... of course you mesh this together with B3647 as said above.