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Old 09-26-2017, 03:42 AM
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Exhaust fumes/C02 problems with top down - better exhaust?

My husband has worked around a lot of nasty chemicals and has now developed a chemical sensitivity. Everything bothers him it seems. Paint fumes, scented laundry detergent, and now the exhaust in the Jeep when the soft top is down. I don’t have any issues, but he is like a radar detector now that his senses are on overdrive. Does anyone have any aftermarket exhaust recommendations that may eliminate any odor/C02 in the cab?


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Old 09-26-2017, 06:46 AM   #2
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Wow. Interesting to find someone that has this worse than I do. I seem to be ok with most solvents and exhaust and natural scents but absolutely can't stand perfumes or air fresheners or fabric softeners. I can taste them and my tongue won't stop tingling for quite a while after exposure. I've had to change train cars because someone on the car has perfume on.

I really sympathize with your husband!

That said... are you sure it's your Jeep that's the problem? Is he bothered when you're on your own on a back road just truckin' along?

Sensitivities aside, I hate breathing crappy exhaust as much as the next guy but find I only have an issue with cars without emissions controls, whether they're older cars or have been modified. It's the worst part about driving a convertible. Every now and then you end up behind someone that's spewing fumes out whether it's some dump truck or a Lamborghini with no cats or a classic muscle car or anything in between. I just find a way to not be behind them anymore.
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Old 09-26-2017, 06:56 AM   #3
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Originally Posted by mindyb View Post
My husband has worked around a lot of nasty chemicals and has now developed a chemical sensitivity. Everything bothers him it seems. Paint fumes, scented laundry detergent, and now the exhaust in the Jeep when the soft top is down. I don’t have any issues, but he is like a radar detector now that his senses are on overdrive. Does anyone have any aftermarket exhaust recommendations that may eliminate any odor/C02 in the cab?


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how old is the jeep? maybe have a exhaust shop take a look and see what they can do?
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Old 09-26-2017, 07:39 AM   #4
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Originally Posted by mindyb View Post
My husband has worked around a lot of nasty chemicals and has now developed a chemical sensitivity. Everything bothers him it seems. Paint fumes, scented laundry detergent, and now the exhaust in the Jeep when the soft top is down. I don’t have any issues, but he is like a radar detector now that his senses are on overdrive. Does anyone have any aftermarket exhaust recommendations that may eliminate any odor/C02 in the cab?


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I am super sensitive to chemical smells too. Following Harley's seems to be the worst other than the occasional old cars and trucks. I don't notice any in the Jeep itself though. I'd try a new CAT or at least get the exhaust system checked. Also various combinations of soft top down with certain windows up or down create different drafts and can pull fumes in more. The worst obviously would be riding with just a rear window up. Get that exhaust checked or replaced though. You shouldn't have Harley like smells in the Jeep, unless following one. I must have developed the sensitivity too a few years back and now at 49 can't tolerate the smells you mentioned bother your husband. It does suck for him and I'm sure for you too.
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Old 09-26-2017, 08:01 AM
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The Jeep is brand new - 2017. I don’t smell anything, and sometimes he doesn’t either...but he says he can just feel it. He ends up with eyes burning and a headache and I am totally fine. He got this way the other day. Top down and we were driving on country roads with just fields and farms . No other vehicles around. I just wondered if a different aftermarket exhaust would exit differently than stock that may help with this problem.


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Old 09-26-2017, 08:24 AM   #6
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I got my '16 last winter and this summer was the first time I had the top & doors off. I'm not all that sensitive, but I did get the odd whiff of exhaust while I was driving topless. It was most noticeable when accelerating rapidly from a standstill up to highway speeds.

I don't think there's anything you can do exhaust wise. The aerodynamics and the flat rear end of the Wrangler causes a low pressure area to form there. This in turn causes all the air at the rear to get sucked up and pulled towards the interior.

It's not just exhaust fumes either. With the top off you'll find that on really dusty roads, you'll get covered in dust as well as it gets pulled into the interior. I can recall going down one gravel road that was so bad I could taste the dust in my mouth. When I got home, I had to spend a good hour with a wet cloth, compressed air and a vacuum cleaner getting my black interior reasonably clean
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Old 09-26-2017, 08:28 AM   #7
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Yeah... I mean... the stock exhaust spits it out the back. There's really no better place for it.

As far as sensitivities go... on the bright side... I'll taste burning plastic long before an electrical fire ever starts when nobody else can tell there's anything amiss.
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Old 09-26-2017, 11:20 AM   #8
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A diferent exhaust system isn't going to get eliminate exhaust fumes. If you're converter was failing, you'd most likely have a CEL.
Now, you might find a different exit location, but as jwt mentioned, the flat back of the Jeep is going to cause low pressure, and exhaust may be pulled back towards Jeep.
I'd guess the best thing you can do is, keep vents moving fresh air in, and keep all windows down, to keep air moving through cabin. That sucks he's sensitive to that level, that's got to affect daily living.
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Old 09-26-2017, 04:56 PM   #9
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I think the problem is exhaust from other vehicles.
Next to buses or tractor trailers can be miserable. The noise level is even worse. Then I course on my way to the office I always pass a few garbage trucks!!!

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