Need help with connecting a dual port wastegate actuator

[FearceDSM]

I am installing a T3/T4 with an internal wastegate. It uses a dual port wastegate actuator. Which port do I use? Do I plug up one port if I am using the other? Or do I use both ports? Any help would be greatly appreciated.

 

[NDgsx]

If you use a MBC use the bottom port and leave the upper one open.

If you have a EBC follow the manufacturer vacuum routing and setup for an external style wastegate.

 

[FearceDSM]

Thanks for the information. I am trying to have everything ironed out with this turbo install and make it on the dyno this weekend. This really helps alot.
BTW, I am using the original Greddy Profec-b. My question is this; if I am connecting the actuator following the procedure the Profec-b has for a external wastegate, then would I also change the dipswitch settings on the back of the controller for an external wastegate?

 

[NDgsx]

Yes change the dipswitch setting as well.

 

[FearceDSM]

I just want to be sure that this procedure is for an actuator with the dual ports located next to each other side by side and not for the actuator with one at the top of the can and one on the side.

 

[NDgsx]

No that's for a actuator with ports on the top and side, one on either side of the diaphram. I've never seen one with ports side by side before, I didn't even know they existed.

 

[FearceDSM]

Yeah, it's made by Turbonetics. They never sent me instructions. I called a few times to talk to there techs but I keep getting the voicemail.

 

[FearceDSM]

Can anybody tell me how this actuator works and how to hook it up??

 

[Mackzero]

That is the top and bottom actuator, not side by side. They are on the front and back sides of the diaphram.

 

[FearceDSM]

Which is the top and which is the bottom?

 

[DSMJim]

Which is the top and which is the bottom?

The bottom is closest to the rod, top is on the big end.

If you use a MBC use the bottom port and leave the upper one open.

If you have a EBC follow the manufacturer vacuum routing and setup for an external style wastegate.

There is nothing really left to discuss here. Follow exactly what NDgsx said for your profec and you will be done. If you hook it up wrong you will end up not being able to adjust the boost , that is all.

 

[NDgsx]

Yeah that's a normal dual port internal actuator. Run a vacuum line from your turbo (or lower intercooler pipe) to the Profec box, then to the top port (that's the one on the left in the pic).
Run another vacuum line from the intake manifold to the lower port, the one on the right.

If you use a MBC hook it up to the port on the right.

 

[FearceDSM]

Thanks for all the help guys. By the way, I switched to a Hallman mbc.

 

[FearceDSM]

Update
I tried the procedure given, but it does not regulate boost.

I tried to connect the mbc to the top port and capped off the bottom port. It works, but it will not hold boost to redline. That seems to be the only way it will control the boost.

Maybe someone can shed some light on what is going on.

 

[GSX4LIFE]

Leave it hooked up, but uncap the bottom port. Let it see atmosphere.

 

[fish3rboi]

I am having a similar problem now all of a sudden. My dual stage MBC stopped working so I tried replacing it with just a single MBC and I cannot control the boost any longer. I have AGPs kit with a 35mm Tial Wastegate and I have the MBC hooked up between the Intake Manifold / BOV and lower port on the wastegate.. Doesn't control a thing! A friend mentioned hooking it up "bleed off style" by using a T between the two ports on the wastegate.. However in this post, I see different! I am lost...

 

[4G64T]

whatever happenend with this i have the same internal wastegate but i have a turbonetics MBC that is to be use with a dual port wastegate but neither one of them came with instructions go figure

 

[GSXeclipsePSI]

Did you switch the ports used on the profec's solenoid Cause you change it to NC port I believe with external wastegate/dual port wg

 

[RadDsm]

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[GSXeclipsePSI]

Well I see it as someone could search this and come across it one day and still need a answer regardless of the threads age.