VSV (vacuum switching valve) with TRD Airbox

[TOENHEEL]

After fitting my TRD high flow box instead of blocking the VSV off i simply bypassed it using some of the old pipes which a few people seem to do and left the VSV off the car, no warning lights have appeared. Just wondering if theres any negatives to doing it this way in which case i will put it back on!

[NeilC]

I took mine off my n/a ages ago with no probs, just make sure you tape up the connector to it to prevent water getting in.
In order to reduce airflow restriction into the airbox at periods of high demand, and also to provide an acoustic enhancement, the ECU, when switching to high valve lift mode, also opens a flap valve in the underside
of the airbox body. This butterfly valve is sprung open, and is closed by a vacuum actuator supplied from the inlet manifold. The vacuum supply uses an in-line non-return valve and a reservoir incorporated into the front face of the airbox body to maintain flap closure during periods of low inlet depression. A solenoid valve mounted on top of the airbox, and connected into the vacuum capsule line, is energised by the ECU when appropriate
to ventilate the capsule and open the valve. TRD airbox has no flap to activate, I can't see it doing any harm leaving the flap open all the time on a standard box apart from making it slightly louder.

[TOENHEEL]

Yeah thats what i thought, just wanting to make sure its ok.