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Discussion Starter · #1 ·
anyone have any pros or cons for putting in a one way rubber valve on the airbox?

i have a 2.5T but was curious if i put a rubber valve in that would be stiff enough to stay closed on nomal use but would open to allow more air when i accelerate beyond the normal.
 

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Re: Airbox Valve... (DGBibo)

The R's already have one of these. It is set to open at a pretty high vacuum, designed to work if the main air scoop is clogged.


You should run a manometer test (make a simple U-Tube water manometer) and test to see if you have airbox vacuum at WOT.

Otherwise it might not be necessary.
 
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