Could be I was too lean, my 02 module took a crap as I was doing this test. I do have Dave's big fuel pump and regulator however so can't say exactly what the AF was all the time, I started at 12.1 on the meter before the module took a crap so could only assume it wasn't too awful lean. I know it didn't deto if it was lean. I've gone down to 12.9 AF before when ramming in outside air into a real CAI I had poking thru the front of the hood and for certain that was a power gain (picked up a lot of RPM there), but figured I'd best not run it that lean and went away from poking it thru the front of the hood.
Still it was too loud for my liking which I know is subjective, but I was just more looking for power, noise be dammmed.