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Boost-t Install Help

AshR33Gtst

By AshR33Gtst,
in Engines & Forced Induction

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AshR33Gtst Explorer

AshR33Gtst

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Posted

Hello, So ive just brought my very first turbo car (R33 Gtst), im learning fast but I still need some help. so ive brought a dual stage boost-T ive hooked it up and car seems to run sweet, cant really test it till I get a boost gauge tomorrow tho.

Now I know this question has been asked LOTS, but trust me ive posted on forums, and searched internet for ages but got nothing, so why not ask the experts?

Now my question is: Is this hooked up correctly?

post-138295-0-36556700-1420589812_thumb.jpg

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https://www.sau.com.au/forums/topic/452410-boost-t-install-help/
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GTSBoy Grand Master

GTSBoy

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Posted

I'm guessing it's not hooked up right.

If that T piece shown in the middle of those three bits of hose is just a plain T, and there is no restrictor involved in the line going down to the wastegate actuator, then it will do very little.

A "boost T" is a controlled leak of the boost signal. There is an adjustable valve in the "T" that lets more or less of the boost signal out of the line. There must be a restrictor so that the flow (that ends up leaking out through the "boost T") through the restrictor suffers a pressure drop.

The reason they are called "boost Ts" is that the valve and the restrictor are bundled up into the same body (the T) and they are installed into the boost line as if they were a T piece. The signal source and actuator being on the two connections and the other leg of the T being the hole through which the air is leaked out - hiding somewhere on/in the body of the T. Look at http://www.turbosmart.com.au/wp-content/uploads/2011/10/5483.jpeg to see how a typical one is installed.

AshR33Gtst Explorer

AshR33Gtst

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Posted (edited)

Its a dual stage boost T. I understand what you mean about needing a restrictor in the middle but how I've hooked it up seems to be the only way? Maybe I'll just buy a normal boost T and hook that up seems a lot easier.

Edited by AshR33Gtst
GTSBoy Grand Master

GTSBoy

Posted
Posted (edited)

OK, well now that we know the actual type of boost controller, 10 seconds spent on Turbosmart's site provides the following instructions

http://www.turbosmartdirect.com/Product-Categories/Manual-Boost-Controllers/Dual-Stage-Boost-Controller-Blue.html#instruction

Click the Instructions link on that page or click the following link direct to the file.

https://system.netsuite.com/core/media/media.nl?id=177080&c=830533&h=946a342eea68c3fc2e82&_xt=.pdf&ck=lmUxAvMCAh_EXjAZ&vid=lmUxAvMCAibEXn3O&cktime=131827&addrcountry=AU&gc=clear

Edited by GTSBoy
XKLABA Grand Master

XKLABA

Posted
Posted

That's hookd up right, it's a boost "T" which means it bleeds boost pressure out of the wastegate line via the T though an electric valve, this one does so by two different size valves depending on which one is switched on

A long time ago when turbos started becoming popular a mate put a single cam CA18 turbo in a canary yellow 1200 coupe, to lift the boost level he put a T in the wastegate line then ran a meter of hose off the side of the T then cut 1 inch at a time till he got the desired boost level, this worked a treat

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