Heard this noise a few times now after hot starts. Sounds like an excessive amount of intake noise, like a low roaring almost like the sound a large truck makes when breathing hard from a stop. Increases in volume with engine speed, seems like it's coming more from the driver side than passenger. In higher gears once road noise and wind pick up it's just barely audible but enough that you notice a different note to the engine. Always goes away after a few minutes of driving. Is this something related to heat soak after it's sat for 15-20 min?