I have a ScanGaugeII OBD2 diagnostic tool. It reads out the intake air temp while driving and updates it every two seconds from the computer. The stock intake will read the same as the outside air temp display on the dash below 85 degrees F(coolant stays around 80 degrees C on my car). Up until about 100 degrees it will only be around 2 degrees hotter. The biggest difference I have seen while driving is 106 degrees outside and the intake air temp sensor at 113 degrees going 55mph (with coolant around 95-100 degrees C). Just thought I would share because I know a lot of people want custom cold air intakes. The only benefit to those might just be more air velocity if its placed right. Mercedes knew what they were doing when they put the intake track in the grill. Just a K&N box filter should be fine if you want a true cold air intake. Agree or disagree???