On my 2010 Hyundai Genesis Coupe 2L turbo. I currently have a remote mount oil filter that has a sandwich plate between the filter and adapter. I am using this for my oil temperature and oil pressure sensor locations. The sandwich adapter ports are before the filter or on the outside of the oil filter. I am getting rid of the remote mount and will move the sandwich plate back to the OEM location where I have also installed a Ford Taurus SHO oil/ coolant heat exchanger. This has done a good job of moderating the oil temp. So yesterday I moved the pressure sensor down to where the OEM pressure switch is with a tee and other fittings. As I suspected the pressure readings are lower after the filter than before. Here's what I got the other day on the old set up. Oil temp 188F, 5w30 Mobil 1 oil with 4000 miles on it and a Baldwin B228 which has a 30 psi bypass spec. The Hyundai oil pump will bypass around 80 lbs. Old location idle 750 rpms 30 lbs 1500 rpms 58 lbs 2000 rpms 66-67 lbs 3000 rpms 69-70 lbs 4000 rpms 73-74 lbs 7000 rpms 80 lbs (pump bypass active) New location same oil, temp 188F idle 730 rpms 29-31 lbs 1500 rpms 50-51 lbs 2000 rpms 54-55 lbs 2500 rpms 55-56 lbs 3000 rpms 56-57 lbs 3500 rpms 57-58 lbs 4000 rpms 58-59 lbs 4500 rpms 59-60 lbs 5000 rpms 59-60 lbs 7000 rpms 72-73 lbs Quite interesting and I'll have to look at the sandwich adapter when I change over to be sure the ports are all on the outside of the filter.