ND cabin air filter

A cabin air filter is a little silly for a convertible, right? No argument - when the top is down. When the top is up, you want to breathe the cleanest air possible. Here's how you do that. Straight out of Japan, this filter has two pieces - a mesh cover for the intake in the cowl to keep the big stuff out, and a filter specifically designed for fine particulate matter (PM 2.5). The main filter is electrostatically charged so it attracts fine dust and pollen, and it's also made out of an antibacterial material, so it will resist developing an unpleasant odor.

But the ND doesn't have a cabin air filter! Is this Band-Aided into place somehow? Nope. There's a pocket that sure looks like it's designed specifically for a filter (see pictures), but it's hidden behind the dash. The installation is a bit more involved than most, but it's not terrible - check out the video below to see what's involved. 

Please note that the max airflow will likely drop a tick, but not by much - unless you frequently use the highest fan speed, you probably won't notice. 

Both the filter and the screen that are included in this kit are both considered maintenance items. They typically need to be replaced once a year, although a noticeable decrease in air flow or  new smells are both indications that it needs to be replaced.