What does a VW diverter valve do?
As many of you know the purpose of the diverter valve is to vent excess boost when the throttle is closed (you lift off the accelerator or change gear). Without venting this excess pressure, the turbo experiences surge which is actually damaging to the turbo. You can hear this as a fluttering sound.
What happens when you unplug the diverter valve?
Unplugging the connector will stop it working and cause the compressor stall. The ECU will also see it and store a fault, with the likelihood of impaired performance.
Can you bypass a diverter valve?
You CANNOT use a BOV/BYPASS. You must use a diverter valve as it vents back into the intake, if it does not vent into the intake you will start getting inconsistent boost and a check engine light.
How do you test a VW diverter valve?
How Do I Check It?
- Remove the diverter valve.
- Insert the screwdriver handle or pen into the bottom of the DV to open it.
- Cover the top of the diverter valve with your finger.
- Remove the screwdriver or pen, then remove your finger.
- If you hear a pop if your DV is probably ok.
How does a diverter valve work on a turbo?
The diverter valve is usually located on the side of the turbocharger, it is a pressure release system which diverts unused pressure back into the system preventing compressor surge. By rerouting the pressure back to the compressor inlet, diverter valve keeps the compressor wheel moving and decreases turbo lag.
Should you upgrade diverter valve?
If you plan on upgrading your turbo, we recommend using the newer and upgraded OEM diverter valve. Your vehicle will simply run better. There are instances where you will need to run a blow-off valve as a diverter valve will not hold up due to the added pressure from a big turbo.
How big is the diverter valve on a VW A4?
VW A4: 1.8T Diverter Valve quick check… – YouTube VW A4: 1.8T Diverter Valve quick check… If playback doesn’t begin shortly, try restarting your device.
Can a diverter valve fail on a 1.8T Audi?
For many Audi & VW 1.8T owners, the stock diverter valve is prone to failure even under stock daily driving and the factory boost pressure settings.
What does a diverter valve on a car do?
The original factory diverter valve is basically a relief valve for the boost still being generated or stored in your vehicle’s intake tract, as you release from the accelerator and are no longer needing the access boost what was already and is already available needs to be released.
Where is the vacuum valve on an Audi A4?
The vacuum signal that actuated the valve is delivered by the thin hose with the braided fabric exterior (purple arrow). The hose running off to the right from the DV delivers air into the intake tract just before the turbo’s compressor wheel (blue arrow).