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Old 02-08-2016, 11:55 AM   #1
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Odd Exhaust Question

Installed the MBRP Street Catback system last week and couldn't help but notice my ears have felt "stuffy" ever since. The exhaust isn't overly loud, so I don't think it's drone, but instead a change in cabin pressure. Is it possible the tone of the exhaust changed the cabin pressure? If so, is there anything I can do to adjust it? Very strange and will revert back to stock if I can't come up with a solution soon. Don't need any "you're getting old" comments 😜


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Old 02-08-2016, 12:03 PM   #2
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drone or head cold.
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Old 02-08-2016, 12:07 PM   #3
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Hmm, sounds odd. I have the exact exhaust you do and I haven't noticed anything.
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Old 02-08-2016, 12:15 PM   #4
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Quote:
Originally Posted by Strange Mud View Post
drone or head cold.

Too funny - I've been taking Sudafed and Zyrtec just in case, then hopped in the car and it comes back again. Thought it could also be CO2 gas in the cabin, so I had a shop check for leaks and installed a detector in the cabin, reading zero CO2 present.


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---------- Post added at 02:15 PM ---------- Previous post was at 02:14 PM ----------

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Hmm, sounds odd. I have the exact exhaust you do and I haven't noticed anything.

I'm so bummed - love the sound, but not loving how my head feels.


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Old 02-08-2016, 12:22 PM   #5
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Inner ear sensitive to certain lower sound frequencies? It didn't do it with the stock exhaust? If that's the case, almost any aftermarket exhaust may bother you. Just grabbing at straws.
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Old 02-08-2016, 12:26 PM   #6
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Inner ear sensitive to certain lower sound frequencies? It didn't do it with the stock exhaust? If that's the case, almost any aftermarket exhaust may bother you. Just grabbing at straws.

I've been a music junkie for years, having subwoofers in both vehicles and home without issue. And no, didn't happen with stock. Maybe it is indeed a sinus infection with a huge coincidence, but I find that unlikely. But to give you an idea, it feels like the airplane pressure one would experience in a ascending airplane.


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Old 02-08-2016, 12:32 PM   #7
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Well, I was a helicopter pilot for a few years and can relate to what you're trying to explain (even though we didn't fly as high as 747's and such). Does it matter if the windows are up or down?
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Old 02-08-2016, 12:36 PM   #8
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Originally Posted by The Panther View Post
Well, I was a helicopter pilot for a few years and can relate to what you're trying to explain (even though we didn't fly as high as 747's and such). Does it matter if the windows are up or down?

Less-so when the windows are down, but still occurs. I'm going to run out in a bit with the trunk open to see if that helps.


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Old 02-08-2016, 01:01 PM   #9
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I will say there is NO way an cat back system will change cabin air pressure.
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Old 02-08-2016, 01:05 PM   #10
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I will say there is NO way an cat back system will change cabin air pressure.
Agreed, Strange Mud. I was taking a shot in the dark with the frequency thing.
I never heard of this before.
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Old 02-08-2016, 01:21 PM   #11
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I will say there is NO way an cat back system will change cabin air pressure.

My thoughts too, but thought I'd ask.


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Old 02-08-2016, 06:55 PM   #12
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So I just hijacked two different neighbors, my brother and my wife again - none are bothered by the tone. Stuffed the trunk full of towels, blankets, pillows and sheets and still didn't help. I'm giving it a week to rule out an ear infection, then you'll see the exhaust on Craigslist.


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Old 02-08-2016, 07:04 PM   #13
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Quote:
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So I just hijacked two different neighbors, my brother and my wife again - none are bothered by the tone. Stuffed the trunk full of towels, blankets, pillows and sheets and still didn't help. I'm giving it a week to rule out an ear infection, then you'll see the exhaust on Craigslist.


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Wait r u feeling this when ur driving the car only?


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Old 02-08-2016, 07:11 PM   #14
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No, all the time. Worse when driving and immediately after.


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Old 02-08-2016, 07:22 PM   #15
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No, all the time. Worse when driving and immediately after.


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Sounds like U have some kind of infection and possible the low frequency from the exhaust enhances the ear popping. Can't c why else u would experience this. Take 2 pills and call me in the morning🤒


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Old 02-08-2016, 07:48 PM   #16
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Funny you mention this....I had the same sort of coincidence occur nearly two weeks ago. Drove up to Northern GA with a ridiculous head cold. Initially thought it was my FR Borla exhaust causing my ears to pop...come to find out it was in fact the head cold. My suggestion would be to hold off til you're fully healed up before offloading your exhaust. Get well man.


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Old 02-08-2016, 08:01 PM   #17
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Hope you all are correct! I'll report back in a week - thanks for all of the feedback!


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Old 02-10-2016, 02:27 PM   #18
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Sooooo.... Thought about the tips being lined up with the rear valance as instructed, but noticed it was kinda hollow and near the trunk. Pulled off tips and extended them 2 inches from the valance and, voila, no more cabin noise/drone/rumble/pressure.

Thanks for everything, guys/gals!




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