I haven't read through the entire thread, but I've got a baseline vs Injen CAI that was done on my car not too long ago. For some reason the numbers on my dyno aren't as high as high as I've seen elsewhere (baseline and after) but the red line with the CAI (the ONLY performance mod) definitely shows gains over stock, especially around 5k...
Hell, even if the CAI didn't do much of anything for performance (it does) the sound alone is worth the price of admission.