fuel pressure regulator is stock, but I'll check it tomorrow if the vaccuum pipe leaks It did have high idling yeah, turned the idle down a bit a while ago, but it's still not perfect atm. When it idles at 1050 rpm (warm engine), and I give it a short rev, it will drop to 950 rpm. After driving with the car and stopping for a traffic light it will idle at 1050 rpmagain. Give it a little rev when standing still it usually drops to around 950 rpm, but when I move the car and stop for another traffic light..same story again..