What are those vents on the back of the cab for? - Ford Powerstroke Diesel Forum
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post #1 of 15 Old 09-29-2010, 07:53 PM Thread Starter
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What are those vents on the back of the cab for?

I'm in the process of installing my upgraded sound system in my truck. In order to be able to fit my subs behind my back cc seat, I have to leave that back "cloth" panel out of the truck. So that leaves those two black air vents exposed to the cab, which causes more road noise in the cab. I was looking at taping over them to help reduce some of the added noise, but was curious what they are even for?

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post #2 of 15 Old 09-29-2010, 08:07 PM
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Don't quote me but I think they help ease preasure when you slam the doors with all the windows up. With out them you have to REALY slam your doors or crack a window down a little to shut the door normal.

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post #3 of 15 Old 09-29-2010, 08:14 PM
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Originally Posted by justinlogue5_0 View Post
Don't quote me but I think they help ease preasure when you slam the doors with all the windows up. With out them you have to REALY slam your doors or crack a window down a little to shut the door normal.
100% correct.

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post #4 of 15 Old 09-30-2010, 04:44 AM Thread Starter
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Originally Posted by justinlogue5_0 View Post
Don't quote me but I think they help ease preasure when you slam the doors with all the windows up. With out them you have to REALY slam your doors or crack a window down a little to shut the door normal.
So you are saying it would be a bad thing to cover them up then....

2002 F250 XLT CC 4x4
- Isspro EV gauges (Pyro, Trans temp, Boost)
- Walker BTM Muffler
- DIY Intake w/ AMSOIL 4095 washable/reusable filter
- 6.0 Liter Transmission Cooler
- '08 Kool-Vue tow mirrors
- Tuff Country 2.5" leveling kit 22962KN
- Factory F350 blocks in the rear
- Readylift 67-2094UB u-bolt kit for the rear
- Moto Metal 970 18x10's w/ -24 offset
- Cooper Discoverer S/T Maxx 295/70-18's
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post #5 of 15 Old 09-30-2010, 08:03 AM
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Yes, you might try surrounding them with foam or felt. Basically anything that will pass air but block some sound.

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post #6 of 15 Old 09-30-2010, 11:26 AM Thread Starter
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Quote:
Originally Posted by JSchuricht View Post
Yes, you might try surrounding them with foam or felt. Basically anything that will pass air but block some sound.
Thanks, I might look into doing that.

2002 F250 XLT CC 4x4
- Isspro EV gauges (Pyro, Trans temp, Boost)
- Walker BTM Muffler
- DIY Intake w/ AMSOIL 4095 washable/reusable filter
- 6.0 Liter Transmission Cooler
- '08 Kool-Vue tow mirrors
- Tuff Country 2.5" leveling kit 22962KN
- Factory F350 blocks in the rear
- Readylift 67-2094UB u-bolt kit for the rear
- Moto Metal 970 18x10's w/ -24 offset
- Cooper Discoverer S/T Maxx 295/70-18's
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post #7 of 15 Old 09-30-2010, 05:21 PM
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Tape over them, then slam your door with you sitting in the truck. It'll hurt.

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post #8 of 15 Old 09-30-2010, 05:35 PM
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Quote:
Originally Posted by Zaairman View Post
Tape over them, then slam your door with you sitting in the truck. It'll hurt.
Im tempted to try that just for the hell of it.

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post #9 of 15 Old 09-30-2010, 05:40 PM
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When I dynamatted my truck, I went right over these and then went back and cut a slot through the middle of both, it seems to be quieter and cabin pressure isnt a problem

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post #10 of 15 Old 09-30-2010, 06:28 PM
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Quote:
Originally Posted by Jake View Post
Im tempted to try that just for the hell of it.
Your ears will hurt.

Zach
2000/2006ish Ford F-250 Larryette 7.3 Powerstroke 4x4
5" Sewer Pipe Exhaust (video clip), DIY 6637 Intake, Wicked Wheel'd, De-foiled, Missing EBPV, Edge Juice with Attitude, Few leaves added here and there, 35" BFGs, 16x10 Eagle Alloys, Alpine W200

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