Wankel, there is no way gasses from the rear runner would, should or even could run in 1 side of the turbine & back out the ther side to the gate. haha makes me laugh just thinking about it.

Besides the fact theres exhaust pressure un the front runner to stop any reverse pressure the turbine itself would have to spin in reverse direction to stop it exiting the rear of the turbo & back out the manifold flange.



You have to remember even when the gates venting, you still need to keep the turbo spooling. The aim is not to cut boost but to limit it to a desired amount.



My case is 48mm gate with 14psi springs & desired boost level is 18-20psi. Boost is controlled by ecu via duty solenoid.





Im starting to think over the weekend I'll rip it apart & plumb the other runner to the gate as all ive got is negative responses.



On the other hand Id love to prove so many nay sayers wrong https://www.nopistons.com/forums/pub...#>/biggrin.png

now that you point that out, the s4 stock turbo just goes to one runner....



it also depends on the turbo/engine and the boost he wants to run. if you want a big street port and smallish turbo to run 10psi, then no it prolly wont work, but if you want to run 20psi, then it might be fine.



the more boost you wanna run, the less you need the wg.....

Dont do that! Try it first, if it doesnt work out, plumb the other side.



People are just afraid of change.

Try it. It will work. There is no reason that it shouldnt.

Thats what i was saying, air cant do that. So to escape the air has to go through the turbo and this spins the turbine. But i have been looking around and reading a bit, this set up might work, i appologize for saying the idea was stupid. I still think there are better ways to do it, and if this way isnt dont correctly like j9fd3s was saying then yeah there could definately be problems. But, no one really knows how much pressure the wg has to bleed off and it is going to be different with different set ups so bleeding off pressure from one runner may be enough to keep the turbo from spinning any faster at the right boost level.



Dont quit now, test it and tell us the results. I am interested to know if it works and if so I want to know the positives and negatives. I promise if it doesnt go well, i will not be a dick, i say that with everyone as my witness.



Be careful though, you dont want to break an engine or anything. What kind of fuel management do you have?

Sorry guys, I caved in & changed the setup.



See the Ausrotary link in 1st post for all the info.



I would have liked to have it work but gave in for fear of engine damage due to VE differences front to rear rotors.



Thanks for your responses.

Wow. https://www.nopistons.com/forums/pub..._DIR#>/sad.png You gave in to theory and rhetoric. I guess we will never see if there were any benefits to that setup.

highly doubt any benifits, but running 20psi it prolly would have worked

Well, at least the runners would be totally separate. At 20 psi and the right turbo, the WG isnt doing much.