Yea actually those 3 things you are calling sensors are electrical connectors and they connect to the PCM. You lift the gray lever on the connectors and each one will unplug from the PCM. Then you'll have to remove the bolts that hold the PCM down. I think the K&N kit has a tray for the PCM, so you'll have to remove the tray along with the PCM here are some pics.
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