DIY: Removing VFAD
04-08-2009, 09:23 PM
#26
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well i did it!!!! i think??.. i spent my day figuring this thing out.. i have a K&N intake and figured that the VFAD looked pointless since i got a short ram intake.. i took the VFAD out and left the little valve vacum line thing that opens and shuts the VFAD door, uncapped... is that alright?? for all i know its still sucking in air... i couldnt find any kind of sensor that DALE said he wanted to remove.. oh weLL.. i guess im about a 1LB lighter now.... LOL.. it was a fun DIY! i also did the cooler oil DIY vents... thanx DIY!!
04-09-2009, 08:23 AM
#30
What air pump are you referring to?Once you cap the nipple behind the throttle body (as I showed two post above), there are no other vacuum lines that need capped nor is there a pump anywhere in the VFAD system.
If the stock "air duct" was kept on the car, you can keep the VFAD valve open at all times by simply disconnecting the vacuum line from the VFAD actuator since it needs 10psi of vacuum to close it fully (which is why it has a vacuum chamber and a one-way valve inline).
Last edited by Jon316G; 04-09-2009 at 08:48 AM.
04-09-2009, 08:59 AM
#31
aka Vacuum pump.
I was talking about the nipple behind the throttle body. For some reason I didn't see your post/picture Jon.
What air pump are you referring to?
Once you cap the nipple behind the throttle body (as I showed two post above), there are no other vacuum lines that need capped nor is there a pump anywhere in the VFAD system.
If the stock "air duct" was kept on the car, you can keep the VFAD valve open at all times by simply disconnecting the vacuum line from the VFAD actuator since it needs 10psi of vacuum to close it fully (which is why it has a vacuum chamber and a one-way valve inline).
I was talking about the nipple behind the throttle body. For some reason I didn't see your post/picture Jon.
What air pump are you referring to?Once you cap the nipple behind the throttle body (as I showed two post above), there are no other vacuum lines that need capped nor is there a pump anywhere in the VFAD system.
If the stock "air duct" was kept on the car, you can keep the VFAD valve open at all times by simply disconnecting the vacuum line from the VFAD actuator since it needs 10psi of vacuum to close it fully (which is why it has a vacuum chamber and a one-way valve inline).
04-09-2009, 09:36 AM
#35
O'rly? A vacuum chamber but an air pump. 
(I'm not really a last word must have guy, but this is fun)
(I'm not really a last word must have guy, but this is fun)Really?
Attachment 136627
Its all in good (and knowledgeable) fun Huey52.
Think you and I have "thumped our chest" enough yet?
Attachment 136627
Its all in good (and knowledgeable) fun Huey52.
Think you and I have "thumped our chest" enough yet?
Last edited by Huey52; 04-09-2009 at 09:39 AM.
04-09-2009, 07:38 PM
#36
!boom*ChiKA#wAH^wAH!
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so i capped it from the intake manifold jus like in the picture.. thanx jon.. but in the process of removing the hose i snapped off the lil buger i was suppose to cap off.. *&(^%*$%%
, weLL i took a glue stick (its the thing that needs a hot glue gun to melt it) and sealed off the hole.. hopefully that holds in place.. about the green harness,somewere around the check valve, connected to the sensor, well can that be unplugged so i can remove the whole Vacum assembly?
, weLL i took a glue stick (its the thing that needs a hot glue gun to melt it) and sealed off the hole.. hopefully that holds in place.. about the green harness,somewere around the check valve, connected to the sensor, well can that be unplugged so i can remove the whole Vacum assembly?
Last edited by NsprAshuNz 671; 04-09-2009 at 07:54 PM.
04-11-2009, 06:34 AM
#38
I don't buy Kool-Aid
I'm going to Autozone to cap that sucker! what wires can I remove that are connected to the the Vfad? I has one that cliped to some hose. I'll see if I can take and post pix of it. I just want to clean up my engine bay 
04-11-2009, 07:01 AM
#41
I've since concealed my harness inside wire loom and wrapped it with electrical tape, but I managed to find the only photo I took that had it showing.
Its the electrical connection to the VFAD solenoid valve.
You can see the VFAD vacuum chamber laying just below it on the under tray.
Later on I removed the whole under tray because it was ugly.
Its the electrical connection to the VFAD solenoid valve.
You can see the VFAD vacuum chamber laying just below it on the under tray.
Later on I removed the whole under tray because it was ugly.
Last edited by Jon316G; 04-11-2009 at 07:05 AM.
04-22-2009, 08:25 PM
#46
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04-22-2009, 08:56 PM
#47
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Ok I don't get this...I took my car apart and there is no vfad to be found, but my car is not loud at all! Is there anyway that it is possibly intact somewhere and is not actually removed?
04-22-2009, 09:33 PM
#48
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loud is relative i guess. go drive a car with vfad still on and you will see the difference, especially on full throttle under 5k-ish
hell, stock intake w/o vfad is louder than some aftermarket intakes (revi for one)
06-17-2009, 05:06 AM
#50
As long as you don't introduce a vacuum leak into your intake, you're OK.
That means you can cap the solenoid, the vacuum chamber, the one-way valve, etc.
BUT... if you plan on removing the hoses running up to the VFAD (which would look a lot better) then you need to cap the nipple behind the throttle body and simply remove the rest.
Now it also won't hurt anything to keep some of the piping in place (like under the air box).
So if for some reason you only want to remove the assembly up to the solenoid (from the intake manifold) and not bother going any "deeper" into it, that is fine too.
You won't even need to cap anything because the VFAD valve needs vacuum to close and simply leaving the piping "uncapped" won't harm anything.
Again, the only thing that NEEDS capped is the nipple behind the throttle body.