Anyone know where I can get the valves opened on my CGT.
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From: Wayne, PA
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I belive on the stock muffler there is a little arm that open and closes the valve, you would probably have to just disconnect that. but at the same time getting to that is a whole other problem you need a dealer to do it for you
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Hey F11, we are junkies for "Eye Candy", share some shots of your CGT.... We would love the opportunity to drool some more...
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Joined: Aug 2006
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From: Knoxville,Tennessee
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Originally Posted by SmoothCab
Hey F11, we are junkies for "Eye Candy", share some shots of your CGT.... We would love the opportunity to drool some more...
x2 we would love some pictures
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Joined: Nov 2003
Posts: 71
From: Las Vegas/Malibu
Rep Power: 25
Exhaust Bypass Valves
From PCA Tech tips:
The car makes a great sound under full acceleration but is very quiet on idle or low rpm's...I understand the exhaust is a two-stage set-up and I would like to know how to keep the system at a higher noise volumn opening all the time...any suggestions ???
You are absolutely correct in the exhaust is of a two stage design. The exhaust system has a flap-type muffler in which is operated by two vacuum pots. These pots are switched on and off by two solenoids. The solenoids are intern controlled by a mapped reference in the Motronic. While any electrical altercation would cause a check engine light a pneumatic one would not. The two solenoids have a simple vacuum supply to one side and the other is switched to the pots. These flaps would normally be in the rest state or closed. Simple removing both of the hoses on each solenoid and connecting them would cause the pots to stay open. The electrical connections must stay attached to the solenoids. This intern would give you a noticeable decibel increase from the exhaust all of the time.
Scott Slauson - PCA WebSite - 8/1/2005
The car makes a great sound under full acceleration but is very quiet on idle or low rpm's...I understand the exhaust is a two-stage set-up and I would like to know how to keep the system at a higher noise volumn opening all the time...any suggestions ???
You are absolutely correct in the exhaust is of a two stage design. The exhaust system has a flap-type muffler in which is operated by two vacuum pots. These pots are switched on and off by two solenoids. The solenoids are intern controlled by a mapped reference in the Motronic. While any electrical altercation would cause a check engine light a pneumatic one would not. The two solenoids have a simple vacuum supply to one side and the other is switched to the pots. These flaps would normally be in the rest state or closed. Simple removing both of the hoses on each solenoid and connecting them would cause the pots to stay open. The electrical connections must stay attached to the solenoids. This intern would give you a noticeable decibel increase from the exhaust all of the time.
Scott Slauson - PCA WebSite - 8/1/2005
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Joined: Jul 2003
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From: Los Angeles, CA
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Originally Posted by thusly
From PCA Tech tips:
The car makes a great sound under full acceleration but is very quiet on idle or low rpm's...I understand the exhaust is a two-stage set-up and I would like to know how to keep the system at a higher noise volumn opening all the time...any suggestions ???
You are absolutely correct in the exhaust is of a two stage design. The exhaust system has a flap-type muffler in which is operated by two vacuum pots. These pots are switched on and off by two solenoids. The solenoids are intern controlled by a mapped reference in the Motronic. While any electrical altercation would cause a check engine light a pneumatic one would not. The two solenoids have a simple vacuum supply to one side and the other is switched to the pots. These flaps would normally be in the rest state or closed. Simple removing both of the hoses on each solenoid and connecting them would cause the pots to stay open. The electrical connections must stay attached to the solenoids. This intern would give you a noticeable decibel increase from the exhaust all of the time.
Scott Slauson - PCA WebSite - 8/1/2005
The car makes a great sound under full acceleration but is very quiet on idle or low rpm's...I understand the exhaust is a two-stage set-up and I would like to know how to keep the system at a higher noise volumn opening all the time...any suggestions ???
You are absolutely correct in the exhaust is of a two stage design. The exhaust system has a flap-type muffler in which is operated by two vacuum pots. These pots are switched on and off by two solenoids. The solenoids are intern controlled by a mapped reference in the Motronic. While any electrical altercation would cause a check engine light a pneumatic one would not. The two solenoids have a simple vacuum supply to one side and the other is switched to the pots. These flaps would normally be in the rest state or closed. Simple removing both of the hoses on each solenoid and connecting them would cause the pots to stay open. The electrical connections must stay attached to the solenoids. This intern would give you a noticeable decibel increase from the exhaust all of the time.
Scott Slauson - PCA WebSite - 8/1/2005
u did it on urs? it's just like the 360CS & 430 right? i guess the RS4 ''S'' button does the same so does the Lambo Gallardo & many others...
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From: Michigan / Kuwait
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I believe its the same system as the 'sport exhaust' on the 997 .. I just disconnected the electrical clip going to the exhaust. But apparently that cuases a CEL in the GT; find the exhaust vaccum plug and disconnect.
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Joined: Nov 2003
Posts: 71
From: Las Vegas/Malibu
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Exhaust Valves
Arling,
I haven't done it yet - I think it is the same type of situation as the Stradale and 430; getting to the exhaust in CGT appears to require removal of various bodywork. As such, a bit more involved, so I didn't do it. I am pleased with the stock exhaust at this point.
I haven't done it yet - I think it is the same type of situation as the Stradale and 430; getting to the exhaust in CGT appears to require removal of various bodywork. As such, a bit more involved, so I didn't do it. I am pleased with the stock exhaust at this point.
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