Until/unless I know the changes made to V8 actually fix the problem there's no point going back and making the same (possibly not-working) changes in V7.
So if you can just do a simple log of 3 or 4 parameters: say RPM, TPS, MAF and MAP in V8 pass-thru with KOEO, transitioning to KOEO for just a few short seconds (or the trace files get too big), that would help me out a lot.
Save the *.htx rtrace file from the V8 Control Panel (more info on saving trace files here:
https://support.efilive.com/kb_artic...8552-EOAJ-5912
Send both the *.htx trace file and the *.pld log file saved in the V8 scan tool.
Regards
Paul