Review on AEM 21 547B Blue Intake System by Billy Danaher

so I can say that I have more power but if you buy a CAI for your 350Z I have to get hydro shield I can't . THAT'S ENOUGH. (SHORT RAMS DO NOT NEED A HYDRO-SHIELD) IT PROTECTS THE FILTER FROM WATER AND DIRT. IF THE FILTER GETS WATER, IT CAN LEAD TO VEHICLE DISEASES DURING ACCELERATION OR IN EXTREME CASES, THE ENGINE CAN WATER. BUT GENERALLY I LOVE THIS PRODUCT AND YES THIS AEM CAI MAKES CHANGES IN FUNCTIONS AND ALSO HAS A SOUND THAT SOME PEOPLE WANT. ----- DON'T FORGET THE HYDRO-SHIELD. You may think you don't need it, but trust me, the first time I washed the car I was scared. I WAS VERY CAREFUL. THE FILTER STILL WET AND THERE WAS A LOT OF FENCE. BELIEVE ME! I AM HERE TO HELP. :-)