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Do US cars have gas particulate filters?

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Old 10-01-2021, 04:33 PM
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Daft Chief
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Default Do US cars have gas particulate filters?
My 2021 992 Carrera does not have GPF. But what about the 2022 GT3?

Instead of asking individually on each new post about US delivery impressions, I’m starting a new thread to discuss the difference, if any, to the US market cars’ exhaust system.

Please share any videos, visual inspection, or sound impressions about the US market exhaust here!
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Old 10-01-2021, 05:20 PM
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Originally Posted by Daft Chief
My 2021 992 Carrera does not have GPF. But what about the 2022 GT3?

Instead of asking individually on each new post about US delivery impressions, I’m starting a new thread to discuss the difference, if any, to the US market cars’ exhaust system.

Please share any videos, visual inspection, or sound impressions about the US market exhaust here!
Yes the USA cars have them
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Old 10-01-2021, 05:29 PM
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Originally Posted by wormman
Yes the USA cars have them
:'(
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Old 10-01-2021, 05:38 PM
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Simple , gone with the cat bypasses
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Old 10-01-2021, 05:54 PM
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Originally Posted by wormman
Yes the USA cars have them
I thoughts its only for European market.
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Old 10-01-2021, 05:58 PM
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My understanding was that the OPF housing is present but the internals are different.
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Old 10-01-2021, 06:09 PM
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A lot of misinformation here.

US cars do not have the particulate filter. However, there are internals that emulate the back pressure of a particulate filter in order to have a uniform engine design across all legislations.

Last edited by python; 10-01-2021 at 06:10 PM.
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Old 10-01-2021, 07:27 PM
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Originally Posted by Karl911
Simple , gone with the cat bypasses
Gone with race headers, or sports headers.
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Old 10-01-2021, 07:44 PM
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Maverick787
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My Speedster has it and it’s a 2019 with the new engine, and I’m sure the 992 has it.
https://www.topgear.com/car-news/sup...00rpm-flat-six
Last edited by Maverick787; 10-01-2021 at 07:47 PM.
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Old 10-01-2021, 09:23 PM
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3-Pedals
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Can you not tell from the muted exhaust tone? Watch a 2018 vs 2021, pretty obvious. Curious how easy it will be to ditch them without tuning.
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Old 10-02-2021, 10:58 AM
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GrantG
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Originally Posted by 3-Pedals
Can you not tell from the muted exhaust tone? Watch a 2018 vs 2021, pretty obvious. Curious how easy it will be to ditch them without tuning.
That was solved years ago with the Speedster- check GMG Racing and others
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Old 10-02-2021, 11:42 AM
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Originally Posted by 3-Pedals
Can you not tell from the muted exhaust tone? Watch a 2018 vs 2021, pretty obvious. Curious how easy it will be to ditch them without tuning.
I drove the speedster hard w/PSE engaged and I was not impressed with the exhaust note at all. Speedster has same engine and exhaust system as the new GT3. My 981 sounds much better. Maybe because of the extra insulation with the top down? OPF is having an impact on sound quality for sure.

That said, most of the videos of the 992 GT3 sound pretty damn good to me though. It's hard judging from videos so I will just have to wait and see if I am going to make a modification.
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Old 10-02-2021, 11:53 AM
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Originally Posted by GrantG
That was solved years ago with the Speedster- check GMG Racing and others
I’m assuming the solution is a full header system that deletes the factory cats, sides.
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Old 10-02-2021, 12:43 PM
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Originally Posted by Maverick787
My Speedster has it and it’s a 2019 with the new engine, and I’m sure the 992 has it.
https://www.topgear.com/car-news/sup...00rpm-flat-six
Topgear is a British publication and all their cars have it. When I got my Speedster, my tech told me that I had the housing and not the internals…
lots of information on both sides.
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Old 10-03-2021, 01:10 PM
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My understanding is the housing exists but the filter is not present in US cars. That was per a friend who spoke with the service manager at a pretty big dealer.
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