the first time i ran mine on an all day drive (before rebuilding the radiator) we took the scoops out and put em in the trunk about halfway through the drive. it dropped the temp a couple of degrees, nothing awe inspiring but we were desperate for every degree on that trip.
tell that to my grabber hood i drilled the mesh out just a bunch of little holes but going down the freeway the rear of the hood lifts up about 1/4-1/2 inch ..going down the track i could see my air cleaner befor i put the hood to cowl seal on