It makes a tshh sound because it releases air when you let off having been on boost, so say lifting off throttle to change gear .. is possible to make it dump in neutral too but its not too good for your engine that one.
As for beating it during a gear change.. erm well maybe if you stay on the throttle while changing it will.. but is a bizarre thing to say lol
Sorry you mis-understand me. Perhaps my wording leaves something to be desired.
Should have been worded 'If you let off the throttle while its on positive boost it will dump' as you know. I'm well aware as to what an actuator does and how it controls boost.
I find it really funny to be fair as to how it always gets confused, when folk think that a dv is something it aint, makes you faster and do stuff they dont etc.
It will dump on positive boost, whether you change gear is irrelevant.
The way the dv is modeled is never going to give proper results either imo. As the sound doesnt just alter with boost level, but throttle and how quickly you let off. With higher boost giving not just a louder sound but different pitch and sometimes a totally different noise.