This might be dumb but I was just wondering if you guys hear the "hissing sound" from the Password CF intake when you turn off your car because I don't. The reason I'm asking is because my old hatch had a intake and it made that noise when I turned the engine off. And I thought every intake made that sound.

 

what intake did you have before?

 

yeah it's dumb.

 

I have the password whale ***** and I do not hear the hiss sound either. I had a aem sr intake before and that made the hiss sound.

 

Are you talking abut the throttle body closing?

 

I had an AEM intake on my hatch before and it made the hissing sound when I shut off my engine. But now with the Password Cf intake on my 00 Si, there is no noise. I guess it has to do with the filter and design. No, I am not talking about the throttle body closing.