Disconnected DV

Conducted a quick experiment to see what the intake pressures did with a disconnected DV (Diverter Valve).

Comp is the pressure at the compressor outlet measured inside the turbo muffler.

Stock DV Unplugged
Stock DV Unplugged

The Boost pressure rises above the upper limit of the stock pressure sensor, indicated by the flat-lined dark blue line just after the Throttle closes.

Diverter Valve Disabled
Diverter Valve Disabled

Then plugged the DV back in and recorded pressures for comparison.

Stock DV Active
Stock DV Active
Diverter Valve Enabled
Diverter Valve Enabled

Nothing unexpected resulted.

There’s an immediate increase in boost pressure when the throttle closes with the DV unplugged, and with the DV functioning the boost pressure quickly begins to decrease with the throttle plate closing.

2 thoughts on “Disconnected DV”

  1. Hi Jeff,
    Interesting experiment. Thank you!
    How was it from a driveability perspective?

    Bill

    1. I didn’t notice a difference, but I only had the DV disconnected for about 20 minutes as my focus was on getting up to full boost and letting up to see how the pressure changed. It’s possible I didn’t encounter a situation where it might have caused a different response that I would have noticed.

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