Does anyone use the B3 plug for the 2jz-gte vvti ecu? Looks like everything is for the automatic transmission other than pin 12 and 16, or would you recommend depinning automatic stuff?
Pin 12 is Exhaust Bypass Valve
- This pin is used to control the VSV which is used to open / close the Exhaust Bypass Valve that is a component of the sequential turbo system. The Exhaust Bypass Valve allows exhaust gas to pre-spool the rear turbocharger prior to it coming online as part of the sequential turbo system.
- This pin is connected to Ground inside the ECU as required to turn the Exhaust Bypass Valve VSV ON allowing pressurised intake air to open the Exhaust Bypass Valve. One side of the VSV should be wired to this pin and one side of VSV should be wired to battery voltage (Main EFI Relay switched).
Pin 16 is the Fuel Pressure Up Vacuum Switching Valve
- This pin is used to control the VSV which is used to increase fuel pressure during hot soak starting.
- To reduce the possibility of fuel vapour formation in the fuel rail during starting from hot soak conditions the Fuel Pressure Up VSV is used to increase the fuel rail pressure for a short period of time after hot soak starting. This pin is connected to Ground inside the ECU as required to turn the Fuel Pressure Up VSV ON which vents the fuel pressure regulator reference to atmosphere resulting in increased fuel rail pressure. One side of the VSV should be wired to this pin and one side of VSV should be wired to battery voltage (Main EFI Relay switched).
Better image:
http://wilbo666.pbworks.com/f/131581...U%20Pinout.png