This will also work for any intake that is open in the back towards the firewall, not just a hole or flap.

You need these parts: ITG Maxogen filter 15JC60/77/125 and silicone reducer 2.75"IDx3.125IDx4"long
and hoseclamps to match (70-90mm and 60-80mm)

This filter is much louder than the kit UNI supplied foam filter, I also trust it more. I'm not sure how loaded up my filter got over the course of one year, but the butt dyno says this is a much better filter. Could be the extra noise though.

Thanks to Dan at EuroSport for spending time getting the proper parts in order, I tried matching specs on my own and didnt do so well.

hope this is helpful to someone...