Just throwin the idea out there.
Edit - If i pull the vacuum hose of the
BOV while the car is running and put it on my thumb i should feel the vacuum yeah?
Won't hurt the car if i leave it off for a sec while i blip the throttle to see the result?
Only reason i thought i'd ask is when the the car suffers the problem the exhaust is excessively "poppy" on the over-run after blipping the throttle, as well as struggling to start.