GS F (2016-present) Discussion topics related to the GS F model

Mid-pipe

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Old 10-08-19, 11:43 PM
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robert2423
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Default Mid-pipe

I am debating between the gthaus meisterschaft and the apexi mid pipe.
I think i prefer the sound of the gthaus, does any one with this midpipe have any CEL, or issues with passing emissions? What one do you guys prefer?
Old 10-09-19, 12:03 AM
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designo
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Mid pipes do not trigger any faults as they do not have O2 sensors connected to them.
However, having said that, mid pipes do cancel out the secondary cats and that may or may not affect emissions depending on your country's DMV requirements.

Your primary cats are implanted into the exhaust manifolds ( headers ) and those do have O2 sensors.
Old 10-09-19, 12:11 AM
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robert2423
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do the mid pipes cause drone at all? or is that more the full system?
Old 10-09-19, 12:17 AM
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designo
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Originally Posted by robert2423
do the mid pipes cause drone at all? or is that more the full system?
Depends on the design honestly. Mid pipes do cause rasp and that may lead to drone at lower RPM's.
Perhaps someone with more experience can chime in.

Axle back ( rear mufflers ) can also cause drone. I have only the Tanabe axle back and can confirm that loose change or metallic object in the cabin can be heard on cold starts and slow acceleration in higher gears.
Old 10-09-19, 08:57 AM
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shu5892001
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The apexi and meisterschaft are very different in sound. While they are both catless, the Apexi is HEAVILY resonated. I have the Apexi midpipe on an otherwise stock car, the car sounds the same if not even quieter during normal driving. It only opens up while going WOT and even then, it is barely louder than stock, maybe a tad deeper.

The meisterschaft is pretty much a straight mid-pipe and it will be significantly louder and will have increased drone/rasp. It depends on what you want and if you have other plans for exhaust. Apexi midpipe alone is way too quite for me liking but then I plan to pair it with a PPE header next summer.
Old 10-09-19, 09:10 AM
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flowrider
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Originally Posted by designo
Mid pipes do not trigger any faults as they do not have O2 sensors connected to them.
However, having said that, mid pipes do cancel out the secondary cats and that may or may not affect emissions depending on your country's DMV requirements.

Your primary cats are implanted into the exhaust manifolds ( headers ) and those do have O2 sensors.
The aft o2 sensor is located in the mid pipe.

Lou
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Old 10-09-19, 09:35 AM
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No CEL, not sure how emissions are in Utah but any catless setup won't pass in CA. Other states, I believe are a lot more lenient.

We can get you pricing on the GTHAUS and Apexi system. The GTHAUS is in stock.

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Old 10-09-19, 10:50 AM
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MasterWork
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I personally want the Apexi midpipe because I don't want my car to be obnoxiously loud.

Last edited by MasterWork; 10-09-19 at 04:15 PM.
Old 10-09-19, 02:18 PM
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Originally Posted by MasterWork
I personally want the Apexi midpipe because I don't want my car to be obnoxiously loud.
I have the Apexi on my list for the same reason. After listening to videos of both, the GThaus comes across as much louder/raspier/drag car like. Different strokes...
Old 10-09-19, 04:47 PM
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I have the apexi midpipe. If you want to bring out the v8 sound, you definitely need to pair it with an axelback. Apexi midpipe with stock exhaust was too quiet for me. I currently have mines paired with a Tanabe axelback and it sounds great. I and plan on selling the apexi midpipe to get the Gthaus midpipe because I want that obnoxiously loud sound lol.
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Old 10-09-19, 06:49 PM
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robert2423
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there is a guy with the youtube video driving around with the Gthaus, and i honestly feel it doesn't sound much louder than stock but that could totally change in person.
im leaning towards the gt. but i still need to compare more and see if i will pass emissions because i don't want to be changing this out once a year. My IS had the ark exhaust but i know this is a different car that one droned quite a bit so i feel like i'm used to it. The Apexi i hear can be quieter than stock at low RPM and that's where i want to hear it more. Has any one tried just a muffler delete i hear that can make the car a lot louder as well?
Old 10-09-19, 06:58 PM
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Originally Posted by Meraki Autoworks
No CEL, not sure how emissions are in Utah but any catless setup won't pass in CA. Other states, I believe are a lot more lenient.

We can get you pricing on the GTHAUS and Apexi system. The GTHAUS is in stock.

-Josh
josh that would be great, you can message me the details is there any benefit to going with the titanium exhaust over stainless??
Old 10-09-19, 07:31 PM
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Originally Posted by robert2423
josh that would be great, you can message me the details is there any benefit to going with the titanium exhaust over stainless??
Weight saving for the car and your wallet
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Old 10-09-19, 11:07 PM
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Apexi Mid-pipe here. I like it quiet to stay in character with the car, a sporty, luxurious, sports sedan. A loud exhaust, IMO, is trying to make the car into something its not.
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Old 10-09-19, 11:31 PM
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Originally Posted by flowrider
The aft o2 sensor is located in the mid pipe.

Lou
Actually you are right, my bad.
But it doesn't trigger a fault, I believe only the pre O2 sensors do which is why headers can trigger it, am I right?


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