Couldn't see the price of "devil horns" myself..so I made up my own scoops. Running filters under the hood into the stock air box didn't hurt my temps any and I'm now pulling air in through 2 3" tubes. "Expect" intake air temps to come down when I remove the OEM cover and replace with a "y" setup.
Ironically - was test fitting pipes from Ebay and bought one.. then a week later the other side. Temps were lower by 10-15 degrees running the drivers side cone and OEM setup on the passenger side.. (N/A Crossfire). About all I can figure is the cone was the primary air flow and kept that side of the air box from heat soaking - keeping temps down.