How to delete the one way valve under the intake?

[popdemonic]

i'm planning to delete the one way valve under the intake manifold since i'm planning to install the catchcan and swirlpot when i connected the vacuum hose from the port under the intake manifold to N80 Charcoal canister valve(which currently it's working as only a check valve since i have VEMS and i have not yet wiring the analog output to control the N80).once i tried to block off this port or plug on the N80,the engine stalled so how can i delete the small one way valve since it seems the engine needs to breath via this port and ISV when the throttle is closed on idle.anyone has a diagram on how to install the catchcan and remove the one way valve?

[quattro-nick]

i have removed the one way valve and n80 valve and block the connection off under the throttlebody
afterwords you can change idle settings in vems

[Rusty]

Yes, you cannot just leave the hole where the 1-way value was open, as this enters the system post MAF, so will make the car run incorrectly.

Run a pipe directly from the top of the swirl pot to the inlet hose (AAN) or to the pipe that runs through the cam cover (ABY/ADU).