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Old 05-18-2019, 12:50 AM   #1
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Valved Exhaust

Hello, I was wondering if anyone knows a cost-effective way to have a valved exhaust on my 2014 titanium hatchback, I would love to be able to pull everything out, but I don't have the slightest clue how to (and if I pulled in the driveway with a loud ass car late at night (or at all) my parents would kill me).

Just some tips on what product to use and the best location for it to be installed to decrease cabin droning but still give a loud sound would be greatly appreciated.


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Old 05-18-2019, 10:11 AM   #2
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I wonder why they'd kill you........LOL. btw its a 4 cylinder car.
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Old 05-18-2019, 11:40 AM   #3
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On a four generally the louder the exhaust the more it will drone, it's a physical acoustics thing.

Check the inspection laws of your state, that is quite likely illegal as h-ll, and will be a violation of federal law any way you go about it. The valve leaking can kill you from CO poisoning as well.
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Old 05-19-2019, 06:15 PM   #4
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Quote:
Originally Posted by MalContentGA View Post
... (and if I pulled in the driveway with a loud ass car late at night (or at all) my parents would kill me). ...
Maybe not:

Quote:
Originally Posted by amc49 View Post
... The valve leaking can kill you from CO poisoning ...
Darwin Award?

Somehow Focus RSs (and some Mustang models, I think) have different, driver selectable levels of muffling without leaking CO into the passenger cabin. You might research how that works. (Not sure how that gets around the law in California that I thought prohibited that.) Or, you could save your money patiently until you can afford to buy an RS that comes that way without the need to modify it.
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Last edited by Arco-Zakus; 05-19-2019 at 06:55 PM. Reason: afterthought
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Old 05-20-2019, 10:48 AM   #5
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Originally Posted by Arco-Zakus View Post
Somehow Focus RSs (and some Mustang models, I think) have different, driver selectable levels of muffling without leaking CO into the passenger cabin. You might research how that works. (Not sure how that gets around the law in California that I thought prohibited that.) Or, you could save your money patiently until you can afford to buy an RS that comes that way without the need to modify it.
The OEM valves are in the muffler.

The only way you're going to be able to do it is to have an electric cutout. Then the car will really sound like it's a 20 year old rust bucket in dire need of a new exhaust.
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Old 05-22-2019, 10:20 AM   #6
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The OEM valves are in the muffler.

The only way you're going to be able to do it is to have an electric cutout. Then the car will really sound like it's a 20 year old rust bucket in dire need of a new exhaust.
It may not be the straight pipe sound but the cutout valve could be put just before the rear muffler. That would give it the same sound as those of us that have done the rear muffler delete. It is quite a bit louder without a lot of drone. I still have the front muffler and resonator and compare the sound level to that of the roush cat back.
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