Boost problems with TIAL gate

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sytyfreak

New member
Hi all,

As some of you know I recently installed a TIAL wastegate. The thing is that I'm having problems. I know that the wastegate is ok, is just that I must have done something wrong.

The problem is that instead of running 0 PSI with the regulator completely shut the truck runs 15-16 PSI. If I open the regulator completely the truck just keeps building boost(how much? I don't know) it just keeps going and going.

I'm trying to figure out what I did wrong, but I can get it. Also I'm using the 1.0bar spring(14.7psi)

Any help will be greatly appreciated. Thanx!
 
THEMADTYPH00N

THEMADTYPH00N

Active member
Re: Boost problems with TIAL gate

You answered your own question

sytyfreak said:
with the regulator completely shut the truck runs 15-16 PSI.
Click to expand...

sytyfreak said:
Also I'm using the 1.0bar spring(14.7psi)
Click to expand...

When you completely shut the regulator the truck is going to run whatever boost that spring was set too.
 
Ian Turgeon

Ian Turgeon

Cascading Inspiration
right.

id verify your hose routing as well, because its not usually dead on the spring pressure.

exhaust pushes against valve/spring (*edit*, actually its the pressure from the side/bottom vacuum port */edit*).. when enough pressure builds, it opens the wg. hence the boost your seeing.

With the innovative, a 15lb spring equates to about 7-8psi base.
 
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sytyfreak

New member
Thanx for the quick responses!

What do you guys mean by "check the vac routes"??? Do you mean if the lines are in the corresponding ports??? or what???

So if I run the .5 bar spring then when the regulator is shut It should read 7psi??? I asked this question before and someone told me that if I used a 14.7 that would be my max boost :-? what am I missing here???
 
Ian Turgeon

Ian Turgeon

Cascading Inspiration
How exactly did you hook up your vacuum lines.. from where to where?

That person was wrong about the max pressure.
The spring dictates BASE boost, not max boost. If you open the regulator all the way, you will be able to build more boost then you have octane for.

a .5 bar spring should net you ~7psi base boost based on your results with the 1bar spring.
 
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smeagol

Active member
Also, a wastegate doesn't open via exhaust pressure overcoming a spring. Boost actuates the diaphragm to open the wastegate.

Test it, go put compressed air to the side port of an external.

base boost = base... it will only go UP from there; the tial may have an external adjustment to bring it down to 14-15psi (screw on the very top maybe ?)

boost routing - tell us details, line goes from compressor of turbo to regulator to where? there are 2 ports on the wastegate, did you use both, and how is it setup ?
 
ghettosled

ghettosled

SYTY SUPERSTORE
wstgate.gif
 
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sytyfreak

New member
Thanx for all the help guys. I checked the routing of the lines and it's like it's supposed to be. Just like the diagram above. I also noticed that the wire on the stock wastegate was loose :-? could my problems be that my stock wastegate is being opened by air pressure???

Thanx!
 
ghettosled

ghettosled

SYTY SUPERSTORE
your stock selenoid can be disconnected, and your stock internal wasgate actuator could also be removed.

With the WG rod removed off the puck, you want to swing the puck counter clockwise till you feel it bottom out on the turbine housing. This would be sealing up the stock wg hole. You want to either tack weld it in this position, or wire tie it shut.

If you try and tighten the rod, and re-connect it, the exhaust pressure WILL cause it to open up and lower your boost.

You Do NOt want to be trying to use both the stock and ext. wg in series.

hope this helps.
 
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