I'm trying to integrate a factory head unit with a Helix Ultra. The car is a Subaru Outback 2020 with Harman Kardon. When I use digital straight to the Helix all speakers are in phase and sum at the crossovers. This indicates to me that everything in the car is setup perfectly. When I use the factory head there are issues. Nick A has looked at this a few times and the best we could come up with in a brief setup was to add delay of 14-15 ms on the left side. This definately helps me to get a decent tune but there are still issues. With polarity set to normal on all speakers my mids are out of phase with each other left to right. In this configuration the left side is in phase and the right side is in phase. If I keep playing the game of polarity flipping something always ends up being out of phase. I recently upgraded the software on the Helix to the newest update because I saw there were updates to the ISA (input signal analyser). There is a glitch in the software that doesn't allow that page and only that page to fully show up on my laptop. I called Audio Tech Fisher and they said they are aware of the problem and are working on it. I'm sure there is also a learning curve o be able to detect these fancy integrated cars. In the meantime does anyone know how to integrate a factory 6th gen Subaru Outback. There is no Nav-tv or Pac that I am aware of. I even considered getting the Kicker key loc. That would be wrong considering I have this Helix Ultar with fancy integration that I don't know how to use properly. What sort of measurments can I take that will help my situation. I have REW and a USB mic.