Mike B Posted May 18, 2005 Share Posted May 18, 2005 Doing some checking of the TT system (oscillating boost on first turbo)- suspected cracked hoses etc, and trying to understand exactly how it all works. Please bear with me as this is all new to me... What is a VSV - the interface between the waste gate actuator and the ecu? Which is the 1st Turbo? Front or back.. and where does the boost solenoid fit into the above scheme of things - I understand that you have to make sure it is disconnected when using a boost controllor. Would love to take this to one of you guys but I live in the middle of no-where in the north and there arn't many specialists nearby, so I'll check all the plumming to see if it clears the gremlin before I make a long trip to to some one who can check over the HKS Fcon and evc system it was supplied with. Link to comment Share on other sites More sharing options...
QSC Posted May 18, 2005 Share Posted May 18, 2005 Doing some checking of the TT system (oscillating boost on first turbo)- suspected cracked hoses etc, and trying to understand exactly how it all works. Please bear with me as this is all new to me... What is a VSV - the interface between the waste gate actuator and the ecu? Which is the 1st Turbo? Front or back.. and where does the boost solenoid fit into the above scheme of things - I understand that you have to make sure it is disconnected when using a boost controllor. Would love to take this to one of you guys but I live in the middle of no-where in the north and there arn't many specialists nearby, so I'll check all the plumming to see if it clears the gremlin before I make a long trip to to some one who can check over the HKS Fcon and evc system it was supplied with. Surely Envy aren't far from you in Bedlington ? Link to comment Share on other sites More sharing options...
terribleturner Posted May 18, 2005 Share Posted May 18, 2005 Which is the 1st Turbo? Front or back. I found out yesterday that the one nearest the driver is the first And that's as far as i can help, sorry Link to comment Share on other sites More sharing options...
Suprasteve Posted May 18, 2005 Share Posted May 18, 2005 Doing some checking of the TT system (oscillating boost on first turbo)- suspected cracked hoses etc, and trying to understand exactly how it all works. Please bear with me as this is all new to me... What is a VSV - the interface between the waste gate actuator and the ecu? Which is the 1st Turbo? Front or back.. and where does the boost solenoid fit into the above scheme of things - I understand that you have to make sure it is disconnected when using a boost controllor. Would love to take this to one of you guys but I live in the middle of no-where in the north and there arn't many specialists nearby, so I'll check all the plumming to see if it clears the gremlin before I make a long trip to to some one who can check over the HKS Fcon and evc system it was supplied with. try reading http://www.mkiv.com/faq/faqtt.html#turbosystem9 and http://www.mkivsupra.net/vbb/showthread.php?t=35926 hope it helps. Link to comment Share on other sites More sharing options...
Gaz Walker Posted May 18, 2005 Share Posted May 18, 2005 Hi Mike, If you get stuck have a drive and up and we'll try and explain things for you, as its not easy typing it all out. Would like to see the new motor anyway Gaz. Link to comment Share on other sites More sharing options...
Mike B Posted May 18, 2005 Author Share Posted May 18, 2005 Hi Mike, If you get stuck have a drive and up and we'll try and explain things for you, as its not easy typing it all out. Would like to see the new motor anyway Gaz. Thanks Gaz, There's a few bits I need from you anyway, The car runs and HKS F-con system, is there anyone around here that is good at the HKS system, I hear it is fairly specialised..? Link to comment Share on other sites More sharing options...
normore1 Posted May 18, 2005 Share Posted May 18, 2005 vsv= vacuum switching valve (solenoid) there are several on the TT first turbo is the front turbo this is the only one connected to the wastegate there is a VSV (boost solenoid) that activates when boost reaches stock maximum (~0.7 BAR) boost. It activates the actuator for the wastegate to bleed off exhaust. Afetrmarket boost controllers typically are placed in between the nipple on the #1 turbo and the actuator. The boost controoler monitors pressure by tapping into a hose at the pressure sensor on the intake manifold. Link to comment Share on other sites More sharing options...
Mike B Posted May 18, 2005 Author Share Posted May 18, 2005 try reading http://www.mkiv.com/faq/faqtt.html#turbosystem9 and http://www.mkivsupra.net/vbb/showthread.php?t=35926 hope it helps. Thanks Steve - I've been on this forum over a year now and I didn't know it was there - mine of info - Thanks... Link to comment Share on other sites More sharing options...
Mike B Posted May 18, 2005 Author Share Posted May 18, 2005 I found out yesterday that the one nearest the driver is the first And that's as far as i can help, sorry Are you sure that the first turbo is the one nearest the driver...? 2 different people think its the one at the front of the engine bay... anyone clarify? Link to comment Share on other sites More sharing options...
terribleturner Posted May 18, 2005 Share Posted May 18, 2005 I thought it was the other way round too, but yesterday i lost power of the 2nd. Turned out a hose nearest the air filter had worked it's way loose. Would like to know now as well. Link to comment Share on other sites More sharing options...
Suprasteve Posted May 18, 2005 Share Posted May 18, 2005 i'm with Terribleturner on this one. When i bought mine i had problems with the 2nd turbo and it turned out to be the one furthest from the driver - but hey what do i know ?!?! Link to comment Share on other sites More sharing options...
Jake Posted May 18, 2005 Share Posted May 18, 2005 The first turbo is the one nearest the front of the car. It's the one with the wastegate of course. Link to comment Share on other sites More sharing options...
terribleturner Posted May 19, 2005 Share Posted May 19, 2005 Is it really?? Cheers clearing that up Jake. Did you see my post the other day about my 2nd turbo not working?? Turned out it was a hoses near the turbo at the front of the car. That's the reason for my answer. Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now