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Can anyone tell me what this silicon hose is for?


Guru

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As pictured. Know what it will do if anything? I have a small kink in it so am wondering if it should affect anything :D

 

Did you do that? The EGBV VSV has been bypassed meaning the EGBV will never open. This means your second turbo will never be prespooled and will be "shocked" into use every time it comes online. Which isn't good for it. :( Are you running in parallel?

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I have done this in my TTC setup,so that could be the reason,in fact i will be eliminating just about all my hoses and VSVs soon.

 

From the first pic you can make out the IACV VSV isn't bypassed so unless it's mechanically wired open or electrically converted the car's running in sequential. In TTC mode the EGBV is redundant anyway so there's no need to bypass it. The only reason I can think of for bypassing the EGBV VSV is to increase the boost created by turbo 1 (at the expense of turbo 2).

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Interesting, my plumbing looks nothing like that, presumably due to my boost controller (which came with the car)....Im running in sequential mode.

 

Your boost controller will be plumbed in down at the wastegate VSV. Your EGBV VSV pipework should be as standard.

 

attachment.php?attachmentid=13935&d=1112558800

 

But in black! :)

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From the first pic you can make out the IACV VSV isn't bypassed so unless it's mechanically wired open or electrically converted the car's running in sequential. In TTC mode the EGBV is redundant anyway so there's no need to bypass it. The only reason I can think of for bypassing the EGBV VSV is to increase the boost created by turbo 1 (at the expense of turbo 2).

 

I am thinking this is correct. An ex-trader (no names) I visited once said he had done a popular mod which saw my first turbo see 1.1-1.2 bar of boost. I did notice that there was less of an jump to turbo #2. I also see turbo #2 hitting in slightly later than normal.

 

Would this be damaging to the tubbies at all?

 

Your boost controller will be plumbed in down at the wastegate VSV. Your EGBV VSV pipework should be as standard.

 

http://www.mkivsupra.net/vbb/attachment.php?attachmentid=13935&d=1112558800

 

But in black!

 

Thanks for that. Can't quite make out where things go exactly but it's definitely different.

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I don't like it, but a lot of people claim to prefer the power delivery. If it was mine I'd return to stock plumbing and use a restrictor and no boost controller at all, but it's not mine.... :)

 

TBH I don't like what its doing so I will be turning it back. I have one of your restrictor rings already and use the PFC as a boost controller.

 

What do I need to return it back to stock plumbing as I have not seen it before? I will also check the rest of the non-stock silicon tubing for other 'mods' they did.

 

Would this mod have affected the life of tubby #2 Chris?

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What do I need to return it back to stock plumbing as I have not seen it before?

 

Just take the blue hose off and connect the two U-shaped black hoses to corresponding pipes.

 

Would this mod have affected the life of tubby #2

 

Possibly. Whenever it's come online it's gone from seeing no gas to full gas flow in an instant.

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Your boost controller will be plumbed in down at the wastegate VSV. Your EGBV VSV pipework should be as standard.

 

[qimg]http://www.mkivsupra.net/vbb/attachment.php?attachmentid=13935&d=1112558800[/qimg]

 

But in black! :)

 

Thanks for the link mate, but my plumbing is still different from the setup you have linked to.

 

I've attached some pics, hopefully I've named everything correctly (my knowledge is limited):

 

http://mooch.pwp.blueyonder.co.uk/supra/plumbing/supra_plumbing_1.jpg

 

I can confirm that this is my boost gauge pressor sensor.

 

http://mooch.pwp.blueyonder.co.uk/supra/plumbing/supra_plumbing_2.jpg

 

If anyone would take the time to explain to me how that works I'd be very grateful. My main concern is that its safe and not shocking my #2 turbo (it doesnt feel like it). If the installation instructions for the boost controller are required to work out why its plumbed like that, I have uploaded a copy here (PDF File).

 

Also, sorry for hijacking the thread Guru....but it got me thinking :)

 

Cheers

Simon

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I think that looks more complex than it really is. Your boost control hoses appear to be plumbed in normally, but that actuator is in such a place that the hoses need to be rather long. And the feed to the pressure tank is probably a byproduct of the installation method rather than anything particularly "trick".

 

Also I think you've got the #1 turbo mod as well, that's the blocked off pipe stuff. I can't make out too much detail though.

 

-Ian

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