I challenge anyone to notice less than a 10hp gain on the butt dyno on a 240hp engine... anyone. Our bodies are simply not tuned (no pun intended) to that degree. We may notice a louder noise and
think we're going faster, but it's a placebo effect.
I was good friends with a fellow S2000 owner. We both had the AEM installed, but his car was miserable to drive, particularly at the VTEC switchover point. For weeks he was scratching his head. Long story short, it was remedied by taking the AEM off... and in doing so, someone finally realized that he had shoved the pipe so far into the filter, it was hitting the cap and cutting off most of the airflow. The intake design was great, but a failed install caused a major failure in its operation.
If you note in that video, he got the temp the same (bravo), but the humidity was WAY different. Dryer air means bigger hp numbers, and he tested the stock box at a humidity 16% lower than the CAI. I saw nothing in the first half of that video to lead me to believe he's applying any SAE correction to his numbers for the wide variation in humidity... so to claim that's a fair test strains credulity. Here's a decent explanation of the equation:
https://wahiduddin.net/calc/cf.htm
With all of that said, I'm bowing out of this discussion. No amount of discussion or factual information will appear to change your mind, so I will not waste any further breath on the matter.