Tial waste gate. Which way is best? Inlet/ outlet

[T3rra]

As I'm having exhaust maded and gtx fitted. Crossover is been fab to suit turbos location and v bands. I'm going to have the adaptor plates removed from the tial and correct flanges fab in.

Now iv got a chance to swap the way the tial waste gate works?
From what iv read the tial will work in both ways. But is better one way over the other.

Stock waste gate and tial waste gate work in differnt ways. But currently the tial only fits in the stock way? However mine is small pipe,( inlet) big pipe (outlet) so I'm guessing its currently in the right way.

Inlet is from the cross over outlet is to the exhuast

Is the inlet at the bottom off the tial waste gate and outlet on the side? The best set up? For dual port.
Pressure is pushing down on valve set by the duty on apexi avcr ebc, against the exhuast gasses going though the cross over.
Once boost level is meet the valve will lift to regulate air flow to the turbo

Is this understanding correct?

Or should it be other way with exhuast gasses filled up inside the waste housing stopping the valve from moving up, creating even pressure, then when boost level is meet vacuum opens letting gasses out off the body and the valve coming up? Can see what would push the valve up in this case?

 

[944Turbo]

Its a long time since I fitted one but I thought the Tial and the standard wastegate worked the same way relative to the valve, but to achieve this the orientation of the diaphragm was different. I think if you turn it round it has to try to open against the exhaust pressure and the spring and it wont (vaguely remember someone on rennlist fitting a tial backwards by accident and having issues). Working in the corrrect orientatation there is the spring and the 'close pressure port' to hold against the exhaust pressure and the 'open port' and exhaust pressure to work against the spring.