23 HP gain sounds too good to be true... and you know what they say about that! And yes, I know you said you seen it with your own eyes..... but how was the testing done?
Jannetty Racing did a big CAI shootout last Sunday and here are the results:
http://spreadsheets.google.com/pub?k...=1&output=html
The biggest gain was 15.9 HP and that was with a CAI that lean the car out and pinged! Next best one was 13.1 HP... so you can see 23 HP seems like a stretch... I would need to see this unit independently tested following the same procedure Jannetty used...