I don't think I have seen any video where it shows the sound difference between the stock airbox and CAI on a MS/MPS 6 ( in my case it is CP-E's ) in succession within one video. So thinking I just installed mine few weeks back, decided to post the video just for the purpose for comparing the sound between the two, so to help those who is still thinking if they would want to part with their hard-earn.
Here is the video on putfil: http://media.putfile.com/airbox-vs-cai
Here is the video on putfil: http://media.putfile.com/airbox-vs-cai