Hey ,
A few days ago i installed a Cold air intake, that same day i tested it out off and on for 2 hrs. I watched tv for about an hr then i went back out again and i noticed a humming sound. I am not 100% sure if the sound was happening before and i just didnt notice it. I took off the intake to see if it was coming from the filter but it was in fact it was coming from inside the throttlebody. The sound sounds kinda like if you was to blow into a empty glass coke bottle. Has anyone else had the same problem if so please let me know. It kinda worries me.
Thanks
vic

 

Also , it makes the sound idle also when i push on gas the engine sound just goes over the humming but if u listen very carfuly u can hear it.

 

You hear air gettin sucked in, it's just from your intake relax.