www.gt4dc.co.uk :: View topic - just fitted a boost controller and have a question

Yes i have disables the TVSV, first gear pulls alot harder now haha and thanks!

kal1fornia wrote:

Yes i have disables the TVSV, first gear pulls alot harder now haha and thanks!

Just a point here - the above should not be the case if you disabled the TVSV correctly.

The TVSV raises boost in the higher gears rather than restricting it in the lower ones.

If the car is performing better with just the TVSV disabled then maybe you have a boost leak somewhere. I would check how you blocked the pipes etc.

With the controller fully open it should be as if it was not there, so a bit strange?

0.9 as stock seems a bit high to me, but some of the more experienced members will confirm?

This makes me think, is the gauge accurate?

My understanding of the TVSV was that it limits boost in 1st gear for the 205. Which i could confirm even before i fitted the boost controller. Because in first gear it was around .6 bar then 2nd+ was around .9 like i said. So pretty much i'm just saying it reverse. So stock boost would be .6 then the TVSV raises it to .9 for 2nd gear plus right?

Author:	kal1fornia [ Fri Jun 29, 2012 8:39 am ]
Post subject:	just fitted a boost controller and have a question
Hi all i just fitted a manual boost controller that i bought off of demon-tweeks.co.uk However when i installed it even on the lowest setting it's running 1.2 bar. I figured on lowest setting it would be substantially lower. So my question is, is there something wrong with the boost controller, something wrong with my turbo lines or is that normal? It was stock before boosting around .9 bar. and it's a 1996 gt4 205. Any info would be awesome guys thanks! shayn

Author:	Sirius [ Fri Jun 29, 2012 8:55 am ]
Post subject:
Got any pictures of the installation? What type of controller is it? Have you disabled the TVSV? Welcome to the Club!

Author:	dale [ Fri Jun 29, 2012 9:25 am ]
Post subject:
yeah with boost controllers they should ideally have an Off setting in which it should boost at actuator pressure, around 0.6bar, it should not boost 1.2bar out the tin, nor do you want it to or you will have a short life of the stock turbo. as above, pictures will be a good starting point

Author:	kal1fornia [ Fri Jun 29, 2012 9:47 am ]
Post subject:
at the moment i'm at work so ill be sure to post some pictures when i get home, but for now, here is the link to the boost controller that i bought http://www.demon-tweeks.co.uk/Search.do ... controller Yes i have disables the TVSV, first gear pulls alot harder now haha and thanks! It came with directions on how to install it and i've looked at many threads on how to install them. to be honest it's really easy but who knows. like i said when i get home ill post some pictures

Author:	NoGT4 [ Fri Jun 29, 2012 11:36 am ]
Post subject:
With the controller fully open it should be as if it was not there, so a bit strange? 0.9 as stock seems a bit high to me, but some of the more experienced members will confirm? This makes me think, is the gauge accurate?

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just fitted a boost controller and have a question http://www.gt4dc.co.uk/forum/viewtopic.php?f=13&t=5743	Page 1 of 2

Author:	Sirius [ Fri Jun 29, 2012 12:14 pm ]
Post subject:
kal1fornia wrote: Yes i have disables the TVSV, first gear pulls alot harder now haha and thanks! Just a point here - the above should not be the case if you disabled the TVSV correctly. The TVSV raises boost in the higher gears rather than restricting it in the lower ones. If the car is performing better with just the TVSV disabled then maybe you have a boost leak somewhere. I would check how you blocked the pipes etc.

Author:	kal1fornia [ Fri Jun 29, 2012 4:33 pm ]
Post subject:
Sirius wrote: kal1fornia wrote: Yes i have disables the TVSV, first gear pulls alot harder now haha and thanks! Just a point here - the above should not be the case if you disabled the TVSV correctly. The TVSV raises boost in the higher gears rather than restricting it in the lower ones. If the car is performing better with just the TVSV disabled then maybe you have a boost leak somewhere. I would check how you blocked the pipes etc. My understanding of the TVSV was that it limits boost in 1st gear for the 205. Which i could confirm even before i fitted the boost controller. Because in first gear it was around .6 bar then 2nd+ was around .9 like i said. So pretty much i'm just saying it reverse. So stock boost would be .6 then the TVSV raises it to .9 for 2nd gear plus right?

Author:	kal1fornia [ Fri Jun 29, 2012 4:36 pm ]
Post subject:
NoGT4 wrote: With the controller fully open it should be as if it was not there, so a bit strange? 0.9 as stock seems a bit high to me, but some of the more experienced members will confirm? This makes me think, is the gauge accurate? That's what i was thinking because when i first took it out after fitting the boost controller i made sure it was open all the way before i started checking my boost pressure on the road. That's why i'm confused

Author:	Sirius [ Fri Jun 29, 2012 7:15 pm ]
Post subject:
kal1fornia wrote: My understanding of the TVSV was that it limits boost in 1st gear for the 205. Which i could confirm even before i fitted the boost controller. Because in first gear it was around .6 bar then 2nd+ was around .9 like i said. So pretty much i'm just saying it reverse. So stock boost would be .6 then the TVSV raises it to .9 for 2nd gear plus right? That is correct - if you just disable the TVSV and do nothing else you will have around 0.6 bar in all the gears. The TVSV works to add the extra boost in the higher gears. We disable it when adding other boost control to ensure that only one controller is managing the boost and to provide the same boost in all gears.

Author:	kal1fornia [ Sat Jun 30, 2012 10:45 am ]
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Here are the pictures. also this is the guide i followed on the TVSV http://www.gtfours.co.uk/default.htm?ht ... cd/fcd.htm I followed the instructions that came with the boost controller so i know i hooked everthing up right. I checked my lines too and couldn't find anything wrong with them.

Author:	Sirius [ Sat Jun 30, 2012 11:02 am ]
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Did you replace the pipe that comes off the chargecooler? Its missing in the 2nd picture - that will certainly cause a large boost leak!

Author:	kal1fornia [ Sat Jun 30, 2012 12:12 pm ]
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yea thats where my BOV is i just had it off

Author:	two_OH_five [ Sat Jun 30, 2012 1:14 pm ]
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Where is the TVSV line blocked off? In the picture all I can see is two complete connections to the wastegate - the one that runs underneath the charge cooler needs to be blocked as per Also worth (if possible) dismantling the manual controller and making sure it's all clean. Sometimes they do seize up

Author:	dale [ Sat Jun 30, 2012 1:47 pm ]
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indeed, the pipe that comes out to face the back of the bay doesnt appear to be blocked off?

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Author:	kal1fornia [ Sat Jun 30, 2012 3:01 pm ]
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I'm confused as to what other pipe you guys are talking about? do you by chance have any pictures to show me?