I had a reputable shop in my area replace my CIS airbox etc. I drove it home and it was fantastic.
The next morning, I start the car and the cold start sequence just felt super off. The RPMs weren’t holding as high as I remember and drop to 950 RPMs fairly quick. Sometimes dipping below to 500-600. A blip of the throttle would cause the car to stall and it wouldn’t restart with out some manipulation of the throttle. When it would seem the idle had stabilized at 950-1000, the car would stall during gear changes or coming to a stop. Once warm, the stalling stops but there’s still times where the RPMs dip below the set idle. I emailed the shop today but haven’t heard back yet. I don’t think they would deliberately have let me have my car back not running correctly.
I DO own a Bosch fuel pressure gauge. I just haven’t gotten around to it 🥱