Just installed my Place Racing CAI, and while i'm happy w/the performance, i'm a little concerned. When the car is sitting there at idle, it makes a strange noise, that i noticed slightly w/just the Y pipe, but now appears to be louder. Its sort of like a hissing noise, but is a little louder and sounds almost like a water faucet. Performance seems fine, but the sound concerns me, any clue what this could be?

 

Does the hissing sound sound like say a pipe sucking air in? If it does it may just be your CAI sucking air in. So it would be normal.

 

its normal.. ALL CAI's do that