Great customer service, shoutout Nelson

install was easy. just take out the old one and install this one. took me less than 5 minutes.

fitment was excellent. i couldn't tell if there's more power after the install but there was a slight difference in the sound.

overall very satisfied with this mod.

The HKS filter fit easily into the stock airbox. However, make sure you have the proper filter orientation. The filter is rectangular, not square. Just had to turn the filter 90 degrees to get the right fit. Seemed my WRX accelerated a bit smoother but the stock filter was pretty well filled with dust. Since I bought the car used, it may have been the stock filter. Nevertheless, I like the way my car is running now!

Installation took 2 minutes. No issues running lean or anything related to needing a tune like some forums may say. This product is a steal for $40! And the box design is dope too.

Cleans air going into the car and comes in a really nice box.