Just installed a PR CAI and everything seems to have gone smoothly. There is however a slight squeaking/chirp when I step on the throttle. For instance, if I'm in 3rd gear and romp on it, there is a squeak, but it goes away at WOT. I can almost recreate the sound if I have the throttle part way open in certain gears. Any thoughts?

 

Are you referring to the whistling sound that intakes sometimes make at part throttle? Mine does that. If it's a squeaking sound, I have never heard of anybody's doing that.

Maybe you have some kind of leak. Recheck everything for starters.