Been jonesin' a long time for this cable and now that it's out, my first target was a 2008 Legacy Spec-B with a weak 6500 RPM rev limit. I edited the map for 7100 and went out on the road, and the rev limit is still cutting in at 6500.
Read from ECU was fine. Pulled the map off over a month ago during OpenPort 2.0 development. Reflashed today with EcuFlash 1.39 and no issues.
The car has a UTEC Delta 003 as well, but the rev limit on that box is set for 7500. It never worked in the first place, either.