At the four corners of the base of the MCU are 10mm nuts with wiggle washers. Remove the nuts (the front passenger side is actually a standoff tower) and washers and set them aside. I spent several minutes fishing out those wiggle washers, because I knew that I'd want to clean the MCU & Air Guide and they'd get lost. UPDATE: The second time I extracted the MCU & AG, I left the washers in place and just took care to fish them out from the assembly once it got to the workbench.

With your can of WD-40 or PB Blaster, squirt a little juice onto the lock of the Air Guide clamp hiding in the hole near the TVS.

Take a break. Get something to wet your whistle or have a smoke. When you come back, use a long flat-bladed screwdriver or the appropriate socket on a long extension to your ratchet and loosen the large hose clamp that secures the Air Guide to the Throttle Body. Mine was pretty tight, and cracked open loudly (on hindsight a bad sign). Open the clamp enough to create a visible gap around the (partially invisible) perimeter of the clamp.

Check the tangle of unplugged wires and hoses that you've created and anticipate what might snag when you pull the MCU out with its nine long fuel-line legs. When you're ready, find some purchase on the MCU with your fingers and tug straight up. My MCU felt like it was still bolted on somewhere, but it finally came free with a reach from over the driver's side fender and pulling on the passenger side of the MCU. Once released from the throttle, lift the MCU & Air Guide assembly slowly and carefully up and out of your car and set it someplace safe. I propped mine up on two 2x4's so that the Air Guide would rest flat (didn't want the mouth getting distorted).