Instructions are clear, easy install just remove intake and old sensor, install this one make sure you use thread seal tape and there are 3 ports I used the one in front for oil temperature reading to my gauge, the one on top for the pressure gauge and I threaded the old factory sensor on the bottom. No leaks and very clean. I would recommend this way as opposed to the galley port under the throttle body and Teeing it off. Very accurate with the use of my serab oil cooler setup. I also used an scanner and readings matched up with the glowshift gauges I purchased as well. Cheap and effective setup if you're going to track your BRZ/FRS/86.