turbosmart dual port 3 on r33, adice please.

[vendetta]

got a turbosmart dual port 3 bov on my r33. For those who are unfamiliar its atmo and plumb back with the option to also block off the trumpet and make it fully plumb back or vice versa with the plumb back pipe. I currently have it set up so its fully atmo the plumb back pipe has not been blocked it just has not been connected. Will i get better performance if i....

a) connect the plumb back but keep the trumpet attached so that at high revs it will still let it atmo but still plumb back at low revs and midrange etc. but does this still work cos i dont understand if at low revs it recirculates the air then wont i still lose some through the trumpet as its still open???

or...

B) fully plumb it back

[Cake]

i have a turbosmart dual port fitted on my r33 gts25t. the way mine is setup is, i still have the plumb back pipe connected, but i do not have the blanking flange installed (the one which reconfigures to either plumb back or atmospheric dump only). the dual port bov has two chambers, the lower one is for plumb back venting, and the upper chamber vents to atmosphere out the trumpet. if it vents at low boost, it will only plumb back into the air intake. if it vents at high boost, the valve will be pushed up past the lower chamber and vent out the trumpet to atmo.

so your answers is, a) works fine

[vendetta]

thanks, do you get back fire on gear changes. Do you get the flutter noise from your air filter as well when its plumbed back