S&B draws air from 3 locations, the front intake scoop, battery side foam inlets, and a fender side inlet.
S&B provides a plug to close the fender side inlet; therefore, it was tested with and without.
While this method draws the coolest air to the compressor, its restrictive design reduces pressure within the air box.
While the extra openings do reduce restriction, intake temps shot up substantially, reaching between 56-75% hotter than stock both with and without the side passenger fender plug.
Given the raised air box and inlet temps, engine bay heat soak and hot air ingestion are the likely cause.