Be sure the wipers are up on the window

Pull the rubber gasket away and then pop/prop the plastic cover against the open hood (pulling the left side up and as much room as you need)

Remove the small plastic cover near the pollen filter and then you can use a screwdriver to free the ECU (first time is hardest on that left clip)

You can 'yank' the ecu out by GENTLY tugging on the cables if you can't fit your hand in to pull the ecu out.