WELL, it has been my understanding that the Comp does both fueling AND timing adjustment to provide a performance boost - and while their web page info fucuses primarily on the increased fueling portion of the Comp's operation, they also claim:
"The Edge Comp module maximizes engine efficiency by monitoring the RPM, timing, turbo boost pressure and fueling parameters. "
SO, what do they DO with that info? Well, THIS:
The module uses this information to determine and control both fueling and timing enhancements for the Bosch fuel injection pump.
MORE:
"Timing and fueling enhancements are controlled via CAN-BUS through the Data Link and by connecting directly into the Bosch fuel injection pump. "
NOW, it seems pretty clear to me, from the above quoted info posted on the Edge website ABOUT how the Comp functions, that both fueling AND timing are combined in increasing engine performance. In what proportion or degree? I dunno, they don't give specifics, about percentage of increased fueling, OR alteration of timing - but I would think that IF they were gonna bother to mess with timing adjustments, they wouldn't do it in a SMALL way...
I got the impression from your original post:
"Basically, timing is the same on all main levels, 1-5 with more effect from the pump wire on each level. If I remember right, timing advance comes in a tad bit earlier on each setting as you go up, but nothing you can really notice. "
... That you feel the degree of actual timing manipulation with the Comp is perhaps minimal or of no great effect - especially in the lower Comp settings, and "not really noticeable in the higher ones"...
But maybe I am misreading your comment and you really mean the initial timing change IS significant - but then doesn't really change much as you go upscale on the various level settings...
Your guess is as good as mine (maybe BETTER!)...
BUT, if being able to actually switch whatever timing IS used by the Comp off and on is the issue, why not simply place a switch in the wire to the VP-44 for the occasions when it is not wanted?