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YOUR RESEARCH997S air box into a 996
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Replace ti anyways
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just found a good deal and needed to replace ti anyways ?
Leading evidence: 'Replace ti anyways' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace ti anyways' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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I got a great deal on a 997S, 3.8 liter air box that I am going to install in my 996. It is a pretty straight forward swap out, but there is one difference in the boxes that I noticed. On the 3.8 box there is a vacuum actuated valve on the smaller hose connection, the small branch of the hose that branches off about halfway up the main hose between the air box and the throttle body. On the older box there is no vacuum valve on the connection.
Does anyone know what the function/purpose of the valve is on the 3.8 box? Can I just leave if disconnected or should I connect it to the vacuum lines. It would seem that this valve closes when there is vacuum and opens as the vacuum drops, unless there is an actuator on the newer cars.
Doug send us some pics and feedback when you are done
What are you trying to accomplish ? just found a good deal and needed to replace ti anyways ? or it is actually purposeful
Purely cosmetic. The 996 air boxes had no real charm so to speak, the 997 boxes actually look like someone put some thought into the appearance.
As of the valve, I think it is only there on the S version. I looked in PET and it is not on all 997's.
experiment.....
install airbox.... go for a nice drive, take notes.
then..... install vac to the valve..... then report.
Sounds like its the resonator thingy that the 996 intake has.... but with the 3.8, the vac is used to open it up above a certain rpm.... its like the 997 PSE..... defaults to off (quiet) position = lame.
On the 996 and I believe 997.1 boxes yes, on the 997.2 3.8 it's a different beast, it has another resonator/muffler/vacuum controled valve built into it.
