Variable Dynamic Effect Intake (VDI) System (Non-Turbo): Actuator

Remove air hose from actuator and connect pressure gauge. See Fig 1 . Slowly apply low pressure compressed air to actuator and check operation. Actuator should be fully opened at 2.8 psi (0.2 kg/cm² ). Replace actuator if it does not perform as indicated.

Fig 1: Testing VDI Actuator

Courtesy of MAZDA MOTORS CORP.