I am fairly sure that I will need to replace my actuators, should have confirmation from the mechanic tomorrow.

 

I think silverbullet is going to be able to help me out with some second hand stock replacements (thanks Mark)

 

I want to be running around 16psi most if the time SO should I be looking at putting in some uprated ones or sticking with stock actuators?

 

Thanks for the help...

If you only have stock turbo's then you will only need stock actuators.

 

Running 16psi on standard injectors will not really do you much good. I think we worked out a few years ago between us all that the best benifit from stock turbo's and injectors is 14.6 psi. Anything more than that you will be maxing out the injectors.

replacing the actuators in situation is a very hard job and from the top of my head, the RH actuator is near impossible to replace with the turbo still attached to the engine...

 

I'd recommend to remove the downpipes first and check if the wastegate flappers can move freely, by putting some compressed air (approx. 8 psi) on the hoses to the actuators.

Maybe something is obstructing one or both of the flappers

replacing the actuators in situation is a very hard job and from the top of my head, the RH actuator is near impossible to replace with the turbo still attached to the engine...

 

I'd recommend to remove the downpipes first and check if the wastegate flappers can move freely, by putting some compressed air (approx. 8 psi) on the hoses to the actuators.

Maybe something is obstructing one or both of the flappers

I know that the actuators are very hard to change in situ, I really don't want to have to take the engine out, but it may be required.

 

The mechanic is going to visually check the actuators first, making sure that the diaphrams are not split or anything simple.

 

I have also asked him to check the wastegates with compressed air.

 

I reckon it is more likely to be the actuators rather than the wastegates as these are so simple it is unlikely that they are obstructed.

 

Stu - When JD helped me install the boost controller and designed a chip for me we checked the AFR readings and we are confident the injectors can cope with 16psi.

 

Anyway, I will let you guys know what is going on when I have some news...

>> I reckon it is more likely to be the actuators rather than the wastegates as these are so simple it is unlikely that they are obstructed.

 

I have seen cheapo chinese divorced downpipes where the piece that seperates the turbine from the flapper area had come loose preventing the flapper to fully open.

>> I reckon it is more likely to be the actuators rather than the wastegates as these are so simple it is unlikely that they are obstructed.

 

I have seen cheapo chinese divorced downpipes where the piece that seperates the turbine from the flapper area had come loose preventing the flapper to fully open.

I am 99% sure it has OEM downpipes. They are not made in China are they?

Update - my mechanic has tested the actuators and wastegates with 8spi throught a compressor and both are working perfectly.

 

he has disconnected the EBC and it is not boosting above 7psi, so I am back to safety boost!

 

This is good news in a way as it means I don't have to pay to have the engine out, but it does not get me back to full boost.

 

Will need to swap the EBC control unit for a known working one and see if that makes a difference...

what happens if you reconnect the normal boost solonoids, get you back to 9psi

what happens if you reconnect the normal boost solonoids, get you back to 9psi

I'm going to give that a go when I pick it up later.

 

9psi is better than 7! :wack:

what happens if you reconnect the normal boost solonoids, get you back to 9psi

Hooked the stock solenoides back up over the weekend.

Now I am getting up to 9ish psi.

 

It does take a lot longer to spool up when you don't have an EBC. car feels slow! :rofl: but quite happy to be running some boost and not overboosting for now.

 

Will be trying a working EBC later in the week, will keep you updated...