Just verified the fuel pressure with the stock Bosch 233 installed before replacing it with the AFPR. Car is stock and was just fired up cold for about 20 seconds before taking the readings. I got 42 with the line off and 39 with it on. My question is in reading the archives most people have a greater pressure differential between the two readings. Car runs fine but I am wondering if I should be starting to chase after vacuum leaks or some other problem. Just trying to catch any problems as they pop up. Thanks.