I have been asking around a few places and can get an exact answer. I have a Blitz dual stage boost controller and a stock 20B with its sequential turbos. I am wondering which wastegate(s) i should tap on the 20B turbos to get the best result.

I removed the intake piping and could see two normal looking waste gates as well as one larger attached to the front turbo housing also which i assume is the PCA?

I drew this diagram to show you all what I am talking about...



This is what I see from the front of the vehicle whilst looking down into the engine bay with the inlet piping off. Now my question is which two of these three waste gates to a plug the Blitz solenoid into?

DMRH told me that "version 2" is the best way to do it... just need to see if the PCA is the large gate that I can see attached to the turbine housing...

 

Looking at the pic i posted the actuator at the top is the main wastegate , the actuator underneath is the precontrol. You have to connect the boost controller to both actuators (version 2 in your diagrams).The very large actuator (not pictured)is for the secondary turbo .

This is how i connected it on my 20b rx7 running sequential turbos.

 

Thankyou! Looks like it is time to drop the coolant too so i can actually get to that bottom wastegate.