Aftermarket Exhaust 992 GT3
04-26-2023, 11:46 PM
#31
04-27-2023, 12:46 AM
#32
04-27-2023, 10:01 AM
#33
Rennlist Member
The USA cars definitely have the OPF filters and they absolutely dull the sound. I removed the OPFs and installed the Cargraphic exhaust valve module and it is night and day different. Sounds incredible but still OEM+. I wanted my car louder than stock but not with an aftermarket tone. Nothing against aftermarket exhausts, just not what I wanted for this car.
With the OPF delete + exhaust valve module combo, the howl in the midrange between 4-5k rpm is back, and sounds like the glorious midrange of the 991 cars.
With the OPF delete + exhaust valve module combo, the howl in the midrange between 4-5k rpm is back, and sounds like the glorious midrange of the 991 cars.
I really gotta do this. Just being lazy to remove the rear bumper lol. Watched many videos online and either the headers have to come off or remove the rear bumper/rear part of the exhaust and leave the headers bolted on. Prob the route I will take. Eventually 😁.
04-27-2023, 01:06 PM
#34
Rennlist Member
I agree. I installed a great exhaust system from BC Fabs. Stock headers. Very mellow sound - no drone, but no volume at all. Plan B: Install Cargraphic controller (purchased from Germany - $525 shipped). Fabulous at cold start, nice sound, but still lacking in volume. Realistally you're facing ~ $12-13K to get the vintage 991 GT3 sound/volume . .😒
I suspect you gotta drive it harder. If you want it to be very loud <5000 rpm (where yours probably lives) you have to add headers or opf delete, but be prepared to have your ears blown off near redline.
re: The opf delete, I have also done that on 2 separate gt3s and tried all the possible combinations. With the stock muffler opf delete is relatively loud but not as much as a rear pipe. It wasn't as loud or mellifluous as the BC rear (even with stock headers) or full Dundon Ti system. Not to mention the power and throttle response. The stock muffler is very restrictive.
04-27-2023, 01:08 PM
#35
they removed OPF surroundings to remove the whole OPF in one piece instead of tearing it apart like all youtubers.
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04-27-2023, 11:46 PM
#36
Could the OPF be reinstalled and work as originally intended? Appreciate your feedback!
04-28-2023, 12:05 AM
#37
Rennlist Member
Oh ok , when I get around to it Ill look at both options. It’s amazing how thick that **** is. The car thanks you for letting it breathe better lol.
04-28-2023, 11:48 PM
#38
Last edited by PLYR007; 04-28-2023 at 11:48 PM. Reason: Misspelling
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Ukkid74 (04-29-2023)
05-01-2023, 04:04 PM
#39
I have full Dundon Ti Loud exhaust with the Ti extra loud inserts and the Cargraphic controller.
It is one of the best sounding cars now. Totally insane. Throughout the entire rev range and even when not pressing the accelerator. It's all giggles and smiles now.
It is supposed to be a notch below the minicrack in sound level. Yes, it does drone, but I don't mind. On the track it was glorious.
I feel very connected with the car and engine now.
It is one of the best sounding cars now. Totally insane. Throughout the entire rev range and even when not pressing the accelerator. It's all giggles and smiles now.
It is supposed to be a notch below the minicrack in sound level. Yes, it does drone, but I don't mind. On the track it was glorious.
I feel very connected with the car and engine now.
-hyp
05-01-2023, 05:36 PM
#41
I no longer remember the precise sound before the exhaust, but I suspect it would be minimally louder and a little deeper.
Obviously, I would no longer opt to install the Ti muffler without the inserts. Or I would just see if they can build the center with the inserts included.
05-02-2023, 10:13 AM
#42
The difference between standard vs. open valves is quite dramatic. I've not really felt the need to drive it with standard valve setting, but could see doing so for longer drives and commutes.
I no longer remember the precise sound before the exhaust, but I suspect it would be minimally louder and a little deeper.
Obviously, I would no longer opt to install the Ti muffler without the inserts. Or I would just see if they can build the center with the inserts included.
I no longer remember the precise sound before the exhaust, but I suspect it would be minimally louder and a little deeper.
Obviously, I would no longer opt to install the Ti muffler without the inserts. Or I would just see if they can build the center with the inserts included.
05-03-2023, 11:05 AM
#43
My understanding the that the calibration between quiet, loud, and the loud inserts is the amount of communication between the valves open vs vales closed pathways within the center section. I believe the inserts essentially isolate the 2 paths in the center.
05-04-2023, 09:32 AM
#44
Rennlist Member
05-07-2023, 02:13 PM
#45
Dundon Exhaust (headers and Crack Pipe)
Hello everyone! I just purchased a 2022 GT3 and I'm excited to get it on our local track. Barber Motorsport. I'm still breaking it in.
My first choice, I'm definitely going to change the whole exhaust system. After lots of research I have decided on the Dundon exhaust system (headers and crack pipe). Would anyone be interested in a group buy? Please let me know.
My second choice, the IPE full exhaust system including headers.
What is your choice on the above two and why??
My first choice, I'm definitely going to change the whole exhaust system. After lots of research I have decided on the Dundon exhaust system (headers and crack pipe). Would anyone be interested in a group buy? Please let me know.
My second choice, the IPE full exhaust system including headers.
What is your choice on the above two and why??
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Alan C. (06-20-2023)