TVIS and VSV LEDs
As seen in the above picture, I have installed two LEDs in the dash that indicate when the ECU switches the TVIS (Toyota Variable Induction System) and VSV (Vacuum Switching Valve). The red LED...
Tagged: TVIS
TVIS Disconnect
TVIS Disconnect = MID RANGE GRUNT There are really only a few free mods, add this one. Give it a shot, if you don’t like it, switch it back! On hearsay, we disconnected our...