Wow, that's a messed up install.
First off, you need to remove the thin hose coming off the bottom of the Intake
manifold and use a small vacuum cap to plug off the hole in the Intake
manifold. Next, that part you have screwed into the Intake
piping below the yellow hose is supposed to go on the Intake
bracket that connects to the car, right near the small fuse box. Next, the sensor that the yellow hose connects to is supposed to be screwed in right below where the yellow hose connects to the Intake
. Finally, there should be only one unconnected plug, the blue one. Everything else gets connected to where it originally was.