Air Duct Resonator ASSY???

[iam_dominic]

Any idea what an Air Duct Resonator ASSY (as stated in nissan service manual) is and what its purpose is? Its a black box thing thats attached to the crossspipe that goes to throttle body.

[paulr33]

Whats the part number? in nissan fast i have r33 air duct assembly and its the airbox snorkel pipe. Part no #16577

[iam_dominic]

Whats the part number? in nissan fast i have r33 air duct assembly and its the airbox snorkel pipe. Part no #16577

there is no part number to it. see picture its circled in red

[iam_dominic]

circled in red

[Bass Junky]

It's a chamber which reduces the amount of intake noise generated.

Simple physics, change the volumn of air and you change the resonate frequency.

A common thing that WRX owners do is affentionatly known as a "Resonatorectomy".

They remove a big resonator from the front bumper area and replace it with an air intake.