engine turbo airflow question

[SteveS]

not sure how to describe it.
no longer an air being let off sound, but a spinning higher pitched sound..

[KRL]

After doing some reading on vortex I found an interesting thread:
http://forums.vwvortex.com/zerothread?id=3336171

I lifted this from it:

- Forge increased backpressure on turbine compared to OEM, as observed by a 3-5psi pre-throttle body spike.
- The Forge valve is still a mechanical diverter valve and still relies on vacuum from the throttle plate for recirculating boost, whereas the OEM DV relies on electricity to retract the piston and recirculate boost.

So it seems like the Forge valve is mechanically actuated.

[SteveS]

so what i thought and, felt\heard then.
so now i don't know whether to keep it or not!
back to testing REVd for psi again

[SteveS]

that's one hell of a read :D