external w/gate setup

[yellowgsr]

hey people. need a helping hand here. ive never messed with external gates before and im wondering if someone can give me a vacuum diagram for ba xr6t ext w/gate and its stock boost controller? its got a 12psi spring and wanna run up to 18psi. just alittle unsure and confused from the tsmart instructions that's all

[k31th]

Since there's no source to "hold it closed" then you only need to connect one end onto the gate (probably the top connection, but check your diagram - one will "help holding it closed" and another is the "crack open pressure/vacuum source") and it'll act like a IWG just with more volume control (hopefully it's bigger than a ported wastegate).

[eff xr6t]

Like so.

Or you can run it from the turbo nipple straight to the solenoid then from the solenoid to the bottom port (closest to the flange) and leave the top port vented to atmosphere.

[yellowgsr]

So the existing internal wastegate line goes into the bottom port of ext wastegate?

[Ralph Wiggum]

Yes. 

 

If your base spring pressure is correct that'll work just fine. 

 

Eff's second method is best for finite boost control but does need more tuning to get right. 

[yellowgsr]

ok. what about the the top port of the ext wastegate? where do I plug that in?

[Ralph Wiggum]

No leave it open to atmo. Plugging it will make it over boost as it will prevent the gate from opening. 

 

Best practice would be a fitting and shirt length of hose run off the top port to atmosphere, but pointing Down to prevent dirt/water ingress but in reality it's not really required. 

[yellowgsr]

Thanks for your help fellas!