Most (if not all) new hondas have cabin filters which keeps dust from blowing through the vents. I think this started in the '98 accord. I was wondering if anyone has installed a filter box into a car that wasn't built with one? I've searched but come up with nothing. I haven't actually poked around behind my dash in most places so I don't even know where to start exactly. Any links, ideas, pics, or suggestions would be appreciated...

 

I'm sure you could fit one infront or behind the evap core, but I think it would have a large impact on the performance of the blower....