The ~~~~~~ shape of that rubber part may disrupt the airflow a little, but IMO, the vacuum of the cylinders will have no problem in that regard. Technically, the roughness will create a higher static pressure, but since the source is so strong, it shouldn't mean all that much lack of flow. The amount of flow desired will be accomplished without any problem IMO.
About the heat factor. In an intake system, there is quite a bit of CFM flowing through that small area, so the velocity is quite high. I would think that if there is any "real" heat transfer, it would be in the fractions of a degree which would mean very little, if not nothing, to the combustion process.
Robb