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Old 03-23-2019, 09:08 PM #16
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i have the deflector and when I open the rear window it smells pretty bad.
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Old 03-23-2019, 09:16 PM #17
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Quote:
Originally Posted by 3bears View Post
also , I think , that the stock exhaust coming out the side helps. back in the "olden" days..to keep the exhaust from coming in the back tailgate window was to reroute the exhaust to the side. Ive seen a lot of cars with exhaust out the back, when they originally came out the side. Some of the early performance exhaust systems for the 4runner came out the back instead of right behind the pass rear tire
I'm only familiar with the 5th gen but all that I've seen have the tail pipe out the back.
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Old 03-26-2019, 10:33 AM #18
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update: being that i have not had the time to address the sunroof issue i gave the vent/rear window down trick a try and it worked really well! Can't find who suggested it but thank you!
Just had the vent from outside blowing a little and i got zero fumes.
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Old 05-09-2019, 10:27 AM #19
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My two pups travel in the cargo area,
so I really like to crack the rear window for them.
(they make faces at the person driving behind me)

But even with windows and sunroof open, I still smell fumes.
And if I can smell it, I know the dogs aren't enjoying it.

I don't have a rear deflector, so I guess I need to modify the tailpipe mas others have suggested.
It was nice to know I am not the only person with this problem!
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Old 05-09-2019, 10:31 AM #20
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Quote:
Originally Posted by Ausumm View Post
My two pups travel in the cargo area,

so I really like to crack the rear window for them.

(they make faces at the person driving behind me)



But even with windows and sunroof open, I still smell fumes.

And if I can smell it, I know the dogs aren't enjoying it.



I don't have a rear deflector, so I guess I need to modify the tailpipe mas others have suggested.

It was nice to know I am not the only person with this problem!


Try side windows up, vent on medium pulling from outside. That worked for me but if i even crack the windows it pulls fumes in.


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Old 05-09-2019, 08:07 PM #21
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Quote:
Originally Posted by Ausumm View Post
My two pups travel in the cargo area,
so I really like to crack the rear window for them.
(they make faces at the person driving behind me)

But even with windows and sunroof open, I still smell fumes.
And if I can smell it, I know the dogs aren't enjoying it.

I don't have a rear deflector, so I guess I need to modify the tailpipe mas others have suggested.
It was nice to know I am not the only person with this problem!
Or add the rear deflector? My dogs ride in the back, window down 1/3 or so, no fumes.
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Old 05-15-2019, 03:03 PM #22
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Quote:
Originally Posted by Joelzy View Post
Try side windows up, vent on medium pulling from outside. That worked for me but if i even crack the windows it pulls fumes in.
I tried it with the side windows up and the sunroof open...it didn't help.
I'll have to try it with the vent.


Quote:
Originally Posted by eimkeith View Post
Or add the rear deflector? My dogs ride in the back, window down 1/3 or so, no fumes.
Not sure if I like the look of the rear spoiler/deflector...
but with prices around $100...the reward is not worth the cost!

But I do appreciate the suggestions!
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Old 05-15-2019, 09:44 PM #23
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Guess I’ll have to try the vent trick because I have the deflector and my rig still turns into a moving gas chamber
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Old 01-04-2020, 01:59 AM #24
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Talking Rear window misery

I'm really surprised this topic has so few comments?
This is my first T4R and I love it except...since day 1 the coolest tailgate window that stows had me amazed. Until I drove down a dirt road and my new black on black TRD Pro was seriously full of dust in 5 minutes.

Then the rains came and winter roads just spray the back window beyond any logic of any vehicle I have ever driven is insane!!

I researched the laws of aerodynamics and learned there is a solution that move the low pressure air further back away from vehicle as the high pressure is compressed and speeds up. Ironically this reduces drag at the same time somewhat like winglets do?

I work in the industry so I am going to have my friends crunch some numbers with the width, length at low velocity to create a proportional deflector or surface, stay tuned for the progress reports - unlike Honda - Toyota doesn't have aerodynamic engineers or concerns which I understand given the application- but they are driven on roads above crawl control speeds
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Old 01-04-2020, 06:09 AM #25
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Quote:
Originally Posted by N45-TRD View Post
... Until I drove down a dirt road ...
Yeah it seemed intuitive not to drive down dirt roads with Any windows open.

Especially the rear one.

When I do drive with it open somewhat, I open the sunroof and air just flows back out, no exhaust in.

Not sure why its a problem for eveyone else....

Luck and enjoy those Toyotas. : ^ )))
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