Depending on what type of 4AGE you have it would be either MAP (no silver adaptor on the filter box) or AFM (with).
On the airbox there is a airtemp sensor, another sensor which connects to the aircon (idle control), and one for flow (checks if air filter is clogged)
It might be easy to Wack on a POD. But you possibly can run into Idle problems such as - Fluctuating (going up and down), stalling.