I'm still waiting for a 1/4 to 1/8 NPT adapter to arrive, but I've installed a T right before the IP and have a VDO pressure sender to be installed there. I'm going to wire it to my turbo boost gauge, 0 to 2 bar (0 to about 29 PSI) with a switch in between. This is the VDO gauge I have. €114,20...