Which exhaust to get for a 991.2 GT3 Touring
10-23-2023, 01:21 AM
#31
Rennlist Member
I have the sharkwerks CMB and unplugged valves. I characterize it as being 20% more of the factory sound. No drone, just 20% more of what the factory exhaust sounded like. Maybe there’s a little more of that enjoyable off throttle burble around town, too. I don’t recall the factory exhaust having much of that.
I think unplugging the valves actually makes the exhaust more sociable as the very unnatural and sudden switching of the valves calls a lot more attention to the sound. With the valves unplugged your roll into the sound much more naturally and if you want to be stealthy, just keep it under 4500k. If I want to be stealthy in my neighborhood, I’m also not trying to drive quickly.
I can see the case for wanting more of that great sound but for my purposes… 20% more is perfection.
I think unplugging the valves actually makes the exhaust more sociable as the very unnatural and sudden switching of the valves calls a lot more attention to the sound. With the valves unplugged your roll into the sound much more naturally and if you want to be stealthy, just keep it under 4500k. If I want to be stealthy in my neighborhood, I’m also not trying to drive quickly.
I can see the case for wanting more of that great sound but for my purposes… 20% more is perfection.
10-23-2023, 10:41 AM
#32
Rennlist Member
Do the Cargraphic option as John suggested above. Then you can run silent when needed or open the valves continually. Best of both worlds.
11-01-2023, 02:37 PM
#33
I have the sharkwerks CMB and unplugged valves. I characterize it as being 20% more of the factory sound. No drone, just 20% more of what the factory exhaust sounded like. Maybe there’s a little more of that enjoyable off throttle burble around town, too. I don’t recall the factory exhaust having much of that.
I think unplugging the valves actually makes the exhaust more sociable as the very unnatural and sudden switching of the valves calls a lot more attention to the sound. With the valves unplugged your roll into the sound much more naturally and if you want to be stealthy, just keep it under 4500k. If I want to be stealthy in my neighborhood, I’m also not trying to drive quickly.
I can see the case for wanting more of that great sound but for my purposes… 20% more is perfection.
I think unplugging the valves actually makes the exhaust more sociable as the very unnatural and sudden switching of the valves calls a lot more attention to the sound. With the valves unplugged your roll into the sound much more naturally and if you want to be stealthy, just keep it under 4500k. If I want to be stealthy in my neighborhood, I’m also not trying to drive quickly.
I can see the case for wanting more of that great sound but for my purposes… 20% more is perfection.
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ninefiveone (11-02-2023)
11-01-2023, 03:04 PM
#34
Same setup and completely agree. Sharkwerks center bypass and disconnected valves is fine so long as you keep the revs low, which shouldn’t be hard in a residential area where you shouldn’t be on it in any case. But the drone-free deletion of the constant open/close of the valves is worth it alone. And of course when you open it up it still sounds very Porsche, which I can’t say for some of the other options. And it’s relatively cheap and been around for a long time. It’s a great solution and a very easy place to start without getting in over your head on cost or complexity.
Last edited by nelleven; 11-01-2023 at 03:05 PM. Reason: Delete - meant to quote prior post
11-01-2023, 03:05 PM
#35
I have the sharkwerks CMB and unplugged valves. I characterize it as being 20% more of the factory sound. No drone, just 20% more of what the factory exhaust sounded like. Maybe there’s a little more of that enjoyable off throttle burble around town, too. I don’t recall the factory exhaust having much of that.
I think unplugging the valves actually makes the exhaust more sociable as the very unnatural and sudden switching of the valves calls a lot more attention to the sound. With the valves unplugged your roll into the sound much more naturally and if you want to be stealthy, just keep it under 4500k. If I want to be stealthy in my neighborhood, I’m also not trying to drive quickly.
I can see the case for wanting more of that great sound but for my purposes… 20% more is perfection.
I think unplugging the valves actually makes the exhaust more sociable as the very unnatural and sudden switching of the valves calls a lot more attention to the sound. With the valves unplugged your roll into the sound much more naturally and if you want to be stealthy, just keep it under 4500k. If I want to be stealthy in my neighborhood, I’m also not trying to drive quickly.
I can see the case for wanting more of that great sound but for my purposes… 20% more is perfection.
The following 3 users liked this post by parkerfe:
11-01-2023, 04:34 PM
#37
Pro
Same setup and completely agree. Sharkwerks center bypass and disconnected valves is fine so long as you keep the revs low, which shouldn’t be hard in a residential area where you shouldn’t be on it in any case. But the drone-free deletion of the constant open/close of the valves is worth it alone. And of course when you open it up it still sounds very Porsche, which I can’t say for some of the other options. And it’s relatively cheap and been around for a long time. It’s a great solution and a very easy place to start without getting in over your head on cost or complexity.
11-02-2023, 12:10 AM
#38
Gonna glom on here. I have a very similar problem but my requirements are slightly different.
1) quiet on startup - I like my neighbors
2) no drone - I like my wife
3) performance - I want more
4) California 😢 - it is what it is and I need to pass them
1) quiet on startup - I like my neighbors
2) no drone - I like my wife
3) performance - I want more
4) California 😢 - it is what it is and I need to pass them
11-09-2023, 04:15 PM
#39
11-09-2023, 04:56 PM
#41
11-13-2023, 06:00 PM
#42
Rennlist Member
11-18-2023, 06:07 PM
#43
Rennlist Member
leave the OEM center and replace the side cans with valved bypass...
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XLR82XS (02-27-2024)
11-18-2023, 06:10 PM
#44
Rennlist Member
step 1 I tried center bypasses for a few months.
Then step 2 I took the sides out and put the valves side bypasses in with stock center. Liked these better.
Then step 3 I got tired of these for longer date night drives. Put the sides back in some I’m back to stock. Happy with the oem setup.
for maybe a other 12 months then will go back to step 1. Then step 2. Then step 3. Repeat every six months.
Then step 2 I took the sides out and put the valves side bypasses in with stock center. Liked these better.
Then step 3 I got tired of these for longer date night drives. Put the sides back in some I’m back to stock. Happy with the oem setup.
for maybe a other 12 months then will go back to step 1. Then step 2. Then step 3. Repeat every six months.
beat track Db limits
