The temp changes you would see by venting air into the engine compartment and not directly to your filter (ram air) would be nominal and serve no performance purpose whatsoever. If you a still have a factory air filter box housing it's sealed and pulls cooler air from the fender, and most gt cold air kits are fashioned the same pull air through fender. The heat extractor hoods work good on the forced induction cars because most of them have a larger filter and its in the engine bay. So it's pulling the hot air from the engine. The faster the car is moving the faster the air is being pushed through the extractor vents. I believe the cevinis stalker hood is available with functioning ram air and you can even get matching stalker side scoops if you're really looking for the functionality of the air in the engine