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Originally posted by BirdDog0
I don't know if we do or not...not a bad idea though. If you wanna see something disgusting at 60K, and you've driven on the dirt before...try this...
REMOVE THE REAR SEAT!! There are two air vents behind the seats and any dust/dirt that may have passed through them. I couldn't believe all the crap I found behind there...Looks like a great place for a filter or two...
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I just did the back seat mod. with 4 rubber cushions and didn't remove the back seat completely. I did today to find the vents. It appears these are one-way vents to exhaust cabin pressure. They have a thin rubber membrane that is designed to 'open' to the outside and close when the cabin pressure is equal to or less than the outside pressure, a barometric damper. This occurs when the windows and doors are closed and the fan motor is used to bring in outside air, in vent mode. The membrane is normally closed to keep out the dust and water and critters that crawl around the outside of the truck trying to get in. These vents are probably necessary as the door and window gasketing is really tight, to keep out noise and debris (and critters).
To install a filter and filter the exhaust air from the cabin only keeps the outside air a little cleaner.
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