Dual exhaust blows vapor ON ONE SIDE - Hyundai Forums : Hyundai Forum
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post #1 of 62 (permalink) Old 12-13-2016, 09:17 PM Thread Starter
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Dual exhaust blows vapor ON ONE SIDE

Hi, so due to the cold weather now we can see vapor coming off of the exahust, but only on the left side, is this normal? I have te 2.0T so I have the QUAD Exhaust. Thanks!
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post #2 of 62 (permalink) Old 12-13-2016, 09:46 PM
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Been out of the game a while but IIRC ours arent true dual and seeing vapor coming out of the driver side isnt something to be concerned of. Someone feel free to correct me if I am wrong though.
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post #3 of 62 (permalink) Old 12-14-2016, 12:09 AM Thread Starter
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Originally Posted by Legacy406 View Post
Been out of the game a while but IIRC ours arent true dual and seeing vapor coming out of the driver side isnt something to be concerned of. Someone feel free to correct me if I am wrong though.
At least the 2.0T quad exahust are real, not sure about the 2.4 dual. I know this for a fact.
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post #4 of 62 (permalink) Old 12-14-2016, 01:05 AM
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Quad tip doesnt = quad exhaust.
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post #5 of 62 (permalink) Old 12-14-2016, 01:37 AM Thread Starter
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Quad tip doesnt = quad exhaust.
What's your point?
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post #6 of 62 (permalink) Old 12-14-2016, 02:53 AM
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I've got dual and lots of vapor coming out both sides. I don't think think the vapor is balanced. Sometimes more on one side and vise versa.

It is true that in the sonata, dual or quad just refers to the number of tips at the back muffler. The engine only has one true exhaust output. So it's more for cosmetics as the pipe just gets split out somewhere in the middle


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post #7 of 62 (permalink) Old 12-14-2016, 02:59 AM
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Originally Posted by MattTRIX View Post
I've got dual and lots of vapor coming out both sides. I don't think think the vapor is balanced. Sometimes more on one side and vise versa.

It is true that in the sonata, dual or quad just refers to the number of tips at the back muffler. The engine only has one true exhaust output. So it's more for cosmetics as the pipe just gets split out somewhere in the middle


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Yep. Path of least resistance n' all. Physics n ****

The fact he tried to say he knows for a fact its quad exhaust...and then when I explain why it isnt and I get a "whats your point" is hilarious. I'm not trying to be a dick about it but I'm trying to help the guy and he is seeming to try to argue with me lol. If someone understands the concept of a true dual vs our exhaust setup and we ran true dual THEN there would be cause of concern.
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Last edited by Legacy406; 12-14-2016 at 03:09 AM.
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post #8 of 62 (permalink) Old 12-14-2016, 07:07 AM
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What we have is a single exhaust pipe from the engine that splits to a dual rear exhaust (with quad tips for 2.0t owners). Essentially, it's just a Y-pipe. Unfortunately, exhaust fumes will tend to follow path of least resistance, hence vapors only flowing from one of the pipes.

Here's a link to a video review of the 2015 2.0t with a great view of the undercarriage: https://youtu.be/qcx2tmAn3Uw
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post #9 of 62 (permalink) Old 12-14-2016, 07:58 AM
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This is perfectly normal.

I have the 2.0T and have noticed that most of the vapor exits the drivers side when at idle.

It does seem to even out when you are on the throttle.
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post #10 of 62 (permalink) Old 12-14-2016, 08:11 AM
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Quote:
Originally Posted by Legacy406 View Post
Quad tip doesnt = quad exhaust.
From simplest to most complex:

Single exhaust - single pipe to muffler with one outlet.

Just to clarify, what you have is single exhaust with a dual-outlet muffler with quad tips. i.e. the exhaust manifold collector goes to a single pipe back to the cats and the muffler and then splits out.

Dual exhaust - two exhaust manifolds taking each pair of cylinders to their own pipe to their own cat to their own muffler with single or dual tips. Advanced systems will add a crossover pipe so left side exhaust can go out the right pipe if there is less pressure that way.

Quad exhaust would be one pipe per cylinder - i.e four pipes, four cats, four mufflers with H-pipes optional. In reality, you VERY rarely see this, except maybe in drag racing or race boats, where emissions and mufflers are not an issue.
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