Here is how I have my lines run. Bov is tapped into a vaccum source in the intake manifold. My question is on the pic does any of those lines need to be tapped to a vaccum source or does the turbo fitting do that? I know it sounds stupid but It makes sense that if that was in a vacuum source it would not be able to make boost.

 

I only have the lower fitting of the WG hooked up to manifold pressure. Top is open to atmosphere. When it goes into boost, the lower part of the WG's diaphragm fills with pressure and that causes the diaphragm to lift the WG valve itself.

 

and either way I dont like to get boost reference from right out of the turbo.

It doesnt matter how much the turbo itself is putting out. If that boost isnt getting to the manifold (boost leak) you know know. I got my boost reference for both WG and boost gauge from the manifold. That's the best stop to have it

 

yae, was typing the same thing ^ he said, but he beat me to it. ditch the other port u dont need to use it even if u have a boost controller. just use the side port.

 

So is what you are saying is eliminate the top line on WG. Where do you put the T to the manifold? Where do I route my Boost controller to if not the Top Line?


Here is my layout that I have now and not making boost!


This last picture is off my bov, fpr, and boost gauge coming of port on manifold.

 

yea you dont need to tap the top port only the side man.

 

So the boost controller goes from the side back to the side.

 

just forget the pressure fittin on the turbo. cap it off, or screw off the fitting and put a bolt in there to cap it. Get the WG reference STRAIGHT FROM THE INTAKE MANIFOLD.

IM>Boost Controller>Wastegate's side port

 

I have tried all of the above and still won't work. but the wastegate is open at all times so I belive its stuck. Going to swap out and hope thats it.

 

your waste gate is not supposed to be open at all times. thats why your not hitting boost and if you have no boost therefore your bov wont work. theres no boost to let off. that last post wouldve been very helpful had you told everyone earlier haha. either way good luck with your car.

 

I did not know it wasn't until I tested it. There is a O shaped piece that is between the WG and flange that sticks about 1/4 inch below on WG side. Going to pop that out and see if that works.

 

Here is what caused the whole mess. I didn't relize it was in there for whatever reason. Maybe got anxious to install. But it seemed to fix the problem. I have to hookup the vacuum lines yet. But started and could really really here a difference in the turbo spooling even at idle!

P.S sorry for the gigantic pictures my phone takes.

 

alright! time to make some power now! lol

and TUNNNNNNNNNNNE!!!! it will keep your engine together lol

 

Well the ring did not fix it! Swaped Wg same stuff. I have hooked up side port to pressure fitting on turbo and also a vac source off the manifold! Nothing! On the other wg its got and adjustable spring so I even tried to eliminate my manual controller. What else could it be. The boost gauge reads like 15-20 vac at idle and 0 at like 3grand? Also for the size of my turbo it should have full boost close to 3 grand.

 

what spring is in your waste gate

 

one is 4psi and the other is alot higher not sure exactly

 

Boost leak?

 

any exhaust leaks where the exhaust manifold meets the heads or where the manifold meets with the turbo?

 

I just checked all the couplers and they seem to be ok. I have one exhaust leak where there is a broken stud on the back manifold. I need to go buy a new tap there is a hole drilled but no threads. Would one leak cause no boost?

 

from what ive seen personally, exhaust leaks before the turbo (i.e. manifold, turbo flange) cause issues with the turbo not getting enough exhuast gas to spool. depends on how large the leak is. also, say if you take off the pipe running from the turbo to the IC, does the turbo push a significant amount of air out or not really? how old is the turbo?

 

Yeah I can see it if the leak was bad enough. I have not taken off the piping and the turbo is new. I need to fix this leak and see what happens.

 

there is no way that a broken exhaust stud could cause a large enough leak to no allow the car to reach boost. It would be such a bad leak you would not even want to drive it.

 

it is loud enough I dont hear my exhaust just the leak so guessing it is the problem.