With PSE off, do the valves open with RPM?
11-07-2023 | 08:56 PM
#31
Thread Starter
Burning Brakes
Joined: Nov 2019
Posts: 1,015
Likes: 566
From: NoVA
Vacuum closes the valves. If you disconnect and plug the line to keep it from throwing a code, the valves will be open all the time.
02-03-2024 | 12:25 PM
#32
1st Gear
Joined: Jan 2024
Posts: 3
Likes: 0
PSE retrofit troubleshoot
Hi all, I recently got a 991.1 that was missing PSE option with a Capristo valves exhaust (no remote). I bought the Suncoast PSE retro kit (excluding the actual PSE) and have a local Porsche expert programmed the PSE. While I’m getting the extra burble from Sport mode, the PSE button is not opening or closing the valve.
Observations:
1. Specialist claims the coding is done properly and I assume this is true since I’m getting the extra burbles in Sport / Sport Plus mode
2. While installing the center console buttons, I also replaced all 8 cov on the car with the latest cov version. Before this, the car was constantly on loud mode but this fixed the 3.8 Carrera S non-PSE behavior in #3 below. Per the installer, no vacuum lines need to be adjusted since the Capristo works like the OEM 3.8 non-PSE with auto/close exhaust flap. So in theory, it just needs PSE programmed.
3. Below 5mph, exhaust flap fully opens and idles loud, while exhaust flap closes to quiet mode until I hit 3300rpm fully opening again.
It’s my understanding that PSE behaves the same as 3.8 non-PSE but when PSE is on, the exhaust flaps should stay open regardless of 5 mph and it should have the option to close the exhaust flap at idle to stay quiet. Clearly this isn’t working.
Grateful to gather your ideas.
Hi all, I recently got a 991.1 that was missing PSE option with a Capristo valves exhaust (no remote). I bought the Suncoast PSE retro kit (excluding the actual PSE) and have a local Porsche expert programmed the PSE. While I’m getting the extra burble from Sport mode, the PSE button is not opening or closing the valve.
Observations:
1. Specialist claims the coding is done properly and I assume this is true since I’m getting the extra burbles in Sport / Sport Plus mode
2. While installing the center console buttons, I also replaced all 8 cov on the car with the latest cov version. Before this, the car was constantly on loud mode but this fixed the 3.8 Carrera S non-PSE behavior in #3 below. Per the installer, no vacuum lines need to be adjusted since the Capristo works like the OEM 3.8 non-PSE with auto/close exhaust flap. So in theory, it just needs PSE programmed.
3. Below 5mph, exhaust flap fully opens and idles loud, while exhaust flap closes to quiet mode until I hit 3300rpm fully opening again.
It’s my understanding that PSE behaves the same as 3.8 non-PSE but when PSE is on, the exhaust flaps should stay open regardless of 5 mph and it should have the option to close the exhaust flap at idle to stay quiet. Clearly this isn’t working.
Grateful to gather your ideas.
02-03-2024 | 12:35 PM
#33
1st Gear
Joined: Jan 2024
Posts: 3
Likes: 0
Hi all, I recently got a 991.1 that was missing PSE option with a Capristo valves exhaust (no remote). I bought the Suncoast PSE retro kit (excluding the actual PSE) and have a local Porsche expert programmed the PSE. While I’m getting the extra burble from Sport mode, the PSE button is not opening or closing the valve.
Observations:
1. Specialist claims the coding is done properly and I assume this is true since I’m getting the extra burbles in Sport / Sport Plus mode
2. While installing the center console buttons, I also replaced all 8 cov on the car with the latest cov version. Before this, the car was constantly on loud mode but this fixed the 3.8 Carrera S non-PSE behavior in #3 below. Per the installer, no vacuum lines need to be adjusted since the Capristo works like the OEM 3.8 non-PSE with auto/close exhaust flap. So in theory, it just needs PSE programmed.
3. Below 5mph, exhaust flap fully opens and idles loud, while exhaust flap closes to quiet mode until I hit 3300rpm fully opening again.
It’s my understanding that PSE behaves the same as 3.8 non-PSE but when PSE is on, the exhaust flaps should stay open regardless of 5 mph and it should have the option to close the exhaust flap at idle to stay quiet. Clearly this isn’t working.
Grateful to gather your ideas.
Observations:
1. Specialist claims the coding is done properly and I assume this is true since I’m getting the extra burbles in Sport / Sport Plus mode
2. While installing the center console buttons, I also replaced all 8 cov on the car with the latest cov version. Before this, the car was constantly on loud mode but this fixed the 3.8 Carrera S non-PSE behavior in #3 below. Per the installer, no vacuum lines need to be adjusted since the Capristo works like the OEM 3.8 non-PSE with auto/close exhaust flap. So in theory, it just needs PSE programmed.
3. Below 5mph, exhaust flap fully opens and idles loud, while exhaust flap closes to quiet mode until I hit 3300rpm fully opening again.
It’s my understanding that PSE behaves the same as 3.8 non-PSE but when PSE is on, the exhaust flaps should stay open regardless of 5 mph and it should have the option to close the exhaust flap at idle to stay quiet. Clearly this isn’t working.
Grateful to gather your ideas.