I had stalling issues and I don't have a low speed drivability hose. Most of my stalling seemed to be happening when I hit the brakes though. So maybe my stalling issue was something entirely different. I did have a short in my PTU harness which might have been the culprit, but I was only able to drive my Z for a short period of time after fixing. Shortly after, I did a compression test and got some bad news.