There was a video made not too long ago that showed certain short ram intakes had the same or better performance than the OEM air box. The main reasoning for temps staying consistent and NOT being warmed was the fact that while the car is in motion, air is filtering through the engine bay and intake pipe itself. Most new cars have OEM air ducting as well that route air strategically to where intakes put their filters. Granted, not all are designed this way, but in the case of the Stinger, for example, it would certainly apply. Not only would air feed into the filter from around the headlights and grill areas, but there?s air ducting built in. Of course, if you?re talking about the car being completely stationary, then naturally this wouldn?t apply. I?ll try to find that vid later on. It was really well done.
Btw, I agree that basic short rams generally aren?t ideal and a heat shield might help, but on the flip side the filters really aren?t continually heating up as the car is driven. I have seen some of those heat shield style intakes get really hot due to the metal surrounding the filter, though factors there can also be attributed to how sealed the engine bay too. It?s an interesting discussion for sure.