Is this normal?

[starks713]

I just had my millen intake installed and when I turn off the ignition a hissing sound comes from under the hood for like 2 3 seconds,this never happened before with the stock intake.

[TheKevin]

You only hear it for a couple seconds? If so, then there might something wrong.

If that hissing sound is constantly there then it should be fine. Actually, it should be a sucking sound.

[lankanprince]

Yea, I get that same sound when the car is on and when the car is off....
Its from the air filter sucking in the air

[BoogieMan]

The sound is also more noticable (like it is when engine is just turned off) when the car is in Neutral.

[88 LE]

Its normal.

Your intake is burping.

[Zeek321]

Its just your intake taking in air,

[starks713]

The only thing I can't figure out is where to put the support bar.