It's more a matter of air pressure divided evenly over the surface area. Moving a large volume will not last as long as moving it slower through a larger surface. It does not take as long as you think for the charcoal to scrub the air. It's better to suck the air through the filters then it is to blow it through them.

For your racecars try adding fans in the front to not only suck air into filters but it will also break up debris that may block the fins too. You need to extend air-cooling past the fins too because of static backpressure that the ends will create.

I raced off road for 12 years with Score when it was starting up. I even drove Baja 1000 6 times. That was fun but before kids, once kids enter the picture all toys were sold so no more racing for me. I drove a class 5 1600 and class 11 and Class 8 open trucks.