VFAD solenoid help
#1
VFAD solenoid help
Hi! I have the high power rx8 and on the vfad solenoid there i had the hose disconnected, so i plugged it back but what should i do with the other plug? Does it needs to be plugged to be air tight or just as is wented?
#2
Smoking turbo yay
Assuming S2 and S1 VFAD are the same, mine is plugged by a plastic piece, so you should plug it as well.
#3
#4
What am I doing here?
Join Date: Mar 2006
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Don't plug it.
The "plug" that people see is actually called a "silencer" by Mazda. It doesn't actually seal. It's there to allow the VFAD vacuum actuator system to return to atmospheric pressure.
Below 5500 RPM, the solenoid is de-energized and the VFAD actuator is kept at intake pressure (vacuum). Above 5500 RPM, the solenoid is energized and it allows the VFAD actuator to return to atmospheric pressure.
If you cap that port, the VFAD will never return to atmospheric pressure and it will never open.
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE CONSTRUCTION/OPERATION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE INSPECTION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR INSPECTION (13B-MSP (HIGH POWER))
The "plug" that people see is actually called a "silencer" by Mazda. It doesn't actually seal. It's there to allow the VFAD vacuum actuator system to return to atmospheric pressure.
Below 5500 RPM, the solenoid is de-energized and the VFAD actuator is kept at intake pressure (vacuum). Above 5500 RPM, the solenoid is energized and it allows the VFAD actuator to return to atmospheric pressure.
If you cap that port, the VFAD will never return to atmospheric pressure and it will never open.
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE CONSTRUCTION/OPERATION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE INSPECTION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR INSPECTION (13B-MSP (HIGH POWER))
#5
Smoking turbo yay
Don't plug it.
The "plug" that people see is actually called a "silencer" by Mazda. It doesn't actually seal. It's there to allow the VFAD vacuum actuator system to return to atmospheric pressure.
Below 5500 RPM, the solenoid is de-energized and the VFAD actuator is kept at intake pressure (vacuum). Above 5500 RPM, the solenoid is energized and it allows the VFAD actuator to return to atmospheric pressure.
If you cap that port, the VFAD will never return to atmospheric pressure and it will never open.
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE CONSTRUCTION/OPERATION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE INSPECTION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR INSPECTION (13B-MSP (HIGH POWER))
The "plug" that people see is actually called a "silencer" by Mazda. It doesn't actually seal. It's there to allow the VFAD vacuum actuator system to return to atmospheric pressure.
Below 5500 RPM, the solenoid is de-energized and the VFAD actuator is kept at intake pressure (vacuum). Above 5500 RPM, the solenoid is energized and it allows the VFAD actuator to return to atmospheric pressure.
If you cap that port, the VFAD will never return to atmospheric pressure and it will never open.
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE CONSTRUCTION/OPERATION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) SOLENOID VALVE INSPECTION (13B-MSP (HIGH POWER))
VARIABLE FRESH AIR DUCT (VFAD) ACTUATOR INSPECTION (13B-MSP (HIGH POWER))
So is that silencer essential, or it's just for noise reduction?
#8
What am I doing here?
Join Date: Mar 2006
Location: 2017 Miata RF Launch Edition
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Yes. I'd put something over the nipple to filter out the dust and other schmoo to make sure it doesn't gum up the solenoid.
Last edited by NotAPreppie; 07-15-2018 at 05:02 PM.
#9
#10
Smoking turbo yay
Here is what the stock cap looks like.
Just ask a local dealer and see how much this costs.
Just ask a local dealer and see how much this costs.
#11
The stealership around here is costly as .... so if it is just something that vents that nipple of the actuator to the atmosphere iwill just add some cheap ebay fiter and it will be looking awesome :D
#12
Vfad Solenoid replacement
I recently installed a short ram intake on my car and made the mistake of throwing away the sensor and the vacuum chamber. Could someone tell me where I could find a new one because I haven’t been able to find a new one. It’s throwing a CEL and I need a fix whether it’s finding the part or removing the whole vfad system
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