[BMWBig6]

To accommodate the air charge temperature sensor (and wiring), I had to make a couple more modifications to the Rubbermaid. I drilled a hole in the rear-bottom corner large enough to fit the plastic wiring conduit snugly (it was around 5/16" but your diameter may vary as the conduit is wrapped with electrical tape). I then made a diagonal cut with the Exacto knife (to maintain the smallest kerf and tightest seal) from the 4" intake hole to the 5/16" hole: