MAF Screen in Factory Airbox - Should this have a seal? - Page 2 -

V6 (1994-2004) Mustangs Technical discussions on the 3.8L and 3.9L V6 torque monsters

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Old 09-08-2015, 10:58 PM   #11  
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To be honest, I haven't noticed anything different with how the car runs. Therefore I think the airbox was still sealing fine. Without that seal around the screen, the last line of defense from allowing unmetered air in is the thin lip seal that's sandwiched in between both halves of the air boxThis, coupled with the 2 clips once snapped together help make it an air tight seal, at least that's my thought on the design.
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Old 09-09-2015, 09:06 AM   #12  
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The screen I'm thinking of is a round metal item that is in the inlet to the MAF box. If this is the one, it doesn't need to be sealed because it's just a "lint trap." Air that might get around it doesn't bypass the MAF.
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