Vacuum Line from Airbox
#2
Rennlist Member
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On the .1 airboxes there is a helmholtz resonator that actuates via that vacuum line. I can only presume the .2's are the same. Most don't prefer the resonator to be active as it decreases the 'sound' from the airbox. I have mine capped.
Not my car, but here you can see the resonator capped off.
Not my car, but here you can see the resonator capped off.
![](http://i188.photobucket.com/albums/z277/FabspeedMSP/997%20Products/997ColdAirKitInstalledonCar-1.jpg)