Hi guys, I have read some threads on disabling VFAD Actuator to help introduce more fresh air while engine at low RPM. Just a quick question, can I remove everything from UIM nipple to VFAD Actuator? Which means I removed all the components marked in orange in the pic including that vacuum line, one way check valve, Vacuum Chamber, VFAD solenoid valve and capped two red circled area. Even though, based on my understanding, it is unnecessary to cap VFAD Actuator side.
Just want to make sure the way I have done is correct. Thanks for any inputs.




I have removed everything in orange, is that safe?

 

Yes its safe to remove all those components... in fact, most of us with aftermarket intakes have those removed.
The electrical connection to the VFAD solenoid should be tape and tied somewhere out of the way.
And yes, the nipple behind the throttle body does need to be capped, but the actuator does not since it will remain open (the valve closes under vacuum).

 

I see, thanks alot for elaboration. I would tape the connection then. I appreciate.
Problem solved.

 

I have been reading all the threads I can find on the VFAD and I am wondering if I can simply cap the nipple while leaving the VFAD system disabled where it is. I understand the cleanliness of the look of complete removal and the slight weight reduction, but I have a body kit on my 8 and dont want to pull that clip back off if possible. So, if I simply cap the nipple, that breaks the vacuum and opens the secondary air intake; am I correct?

 

Yes, it will be fine to cap off that nipple but leave it installed. That said, it doesn't hurt you to leave it active, so ¯\_(ツ)_/¯

 

Sure, but it serves no purpose, as there are no performance gains to be had from doing it.