I have no doubt the new filter element is far superior to the stock cabin filter. Once you see them in real life next to each other you will understand. It is very difficult to spot the difference in the picture below. Will have to see if there are any side leakage issues around the edges. So far there is no difference in air flow and I will have to go test it on a dusty road. I am very confident it will outperform the stock filter by miles and it is a lot cheaper.
Quick update. I have tested them and they perform far superior to the stock cabin filter in dusty conditions. I still have a bit of dust that seem to “leak” through on the sides, but it is far better than what I had before. I will try to see if I can use electrical tape to seal the edges to stop some of the “leaks”.
Another update: I have no used electrical tape to seal the edges of the filter and the results are great. I have gone through Death Valley and Pismo with lots of dust and sand. The only dust that came in was through the windows. There is still a little dust smell in the ventilation system due to poor performance of previous filters. I hope this gets out of the system soon.