I've been wrestling with Sumotoy's results with the hood louvers lowering intake air temps and providing an improvement to the engine's running. If that proves out then everyone would get a nice benefit from installing them. Because my house is in the middle of a renovation I can't seem to find my LC manual. My proposed method would be like this. Swap the egr temp sensor with the brake boost line at the intake plenum. This would put the sensor directly in the air stream. Now run the truck to a full heat soak with the hood closed and take a reading of the sensor. Then simply lift the hood to simulate the vents being installed and look for a temp change in the air. I realize I might get CEL but it shouldn't hamper my readings. The question I have is if a scanning tool such as Autoenginuity (which I have) detects the egr temp through the ECU? If not I should be able to read a resistance change across the sensor and get an idea of how much the air temp had changed. I'm running out of hot weather fast around here so this needs to get done soon because cooler weather might not be as a dramatic result. Any thoughts?