@Ed Harbur posted:My '74 had one that, as I remember, ended up somewhere in front of the right rear wheel.
My 1973 L model had that snorkel attachment that pulled air from under the car. I doubt that you can call it cold air induction since the air is coming through the radiator and under the car. It is certainly a little better than having the air come in after it goes up the front and side of the engine. I designed and tested my cold air induction system using small side scoops that replaced the rear side windows and a sealed air box. My testing showed that with the hoses going into the air box disconnected, the inlet air temperature was 40 to 45 degrees hotter than with the side scoops attached. The system was also tested up to 120 mph using a digital manometer and the pressure inside of the air box kept increasing as the speed increased. We tested it in ten mph increments and the pressure increase was only in ounces. This inlet air temperature data is coming off on my EFI system on line dash monitor. The only other way to pull cool air into your engine is to put a scoop on the roof of the car, but then you are going to limit your rear view visibility. The boundary layer issue came from people trying to get air into their engines with both small and huge side air scoops and not using a sealed air box. There is more air pressure coming up from the bottom of the car and thus does not allow the side scoops to bring air into the engine. Just look at how much more surface area there is under on both sides of the engine as compared to the inlet area of the side scoops.