text:  Give me 30 seconds on air filters, Bill, because my question becomes, you know, I actually see, and I know this from hot rodding, that we worry about how air used to enter a carburetor, and obviously now with fuel injection and mass airflow sensors, not all air filters are the same because the way the pleats are made or the way the filter is wove together, if I'm using the right terminology, that affects airflow across the sensor, and that can lead to engine performance problems.