I installed a Injen Intake several years ago on my 2005 TSX and I think this is what causes my car to create a loud whistling sound.

I have ignored it for so long, but during the real hot months it is really loud. It happens between 75-85 MPH and as soon as you let off the gas it goes away all together.

Anyone know how to quite this down? From some of the reading it seems like this sound is normal.

Any info would be much appreciated.

 

Check if everything is sealed correctly from the filter on to the throttle body

 

I will take a look at seals tonight. I do know that there is one hole in the system that is open. If you click this link http://www.injen.com/galleries/produ...directions.pdf you will notice at the top of the picture where the connection goes into a little black box then goes into the engine there is a little nipple that has an opening there. In the directions that didn't hook to anything. Wonder what happens if i cover that. There is a better picture of this bottom left of page 3 that is labled part C