I recently installed the Injen cold air intake and was wondering what (if any) is the difference in sound that I should expect? At times (usually only in the mourning when I first start the car, I will hear a "hissing". Almost like I can hear the intake sucking in the air. This noise goes away in a minute or two. Is this normal. Do I need to tighten the clamp around the filter and the intak? The car drives fine and I notice a slight increase in performance, but I don't want to be inadvertently sucking dirt particles into the engine. Thanks.

hearing that sound is normal. you will also hear that sound when you shut off the car. the car will have a deeper sound when you drive it harder.

mine sounds like that too, and i have the AEM.

i was suprised how quite my injen intake is.....its makes noise around mid rpm and them again twards redline u can hear it again.....but driving around normaly i cant hear it....sounds stock...i likeee

and yes those are normal noises.....open your window and punch the gas petal to the floor real quick and let off real quick in neutral....u can hear it suck air....

Thanks. I'm relieved.