Standard Rb20 Boost Solenoid

[paulr33]

hi,

there are a few versions of the boost control kit for the powerfc. the two mainstream versions are usually known as the 3pin kit and 5pin kit.

the denomination of this comes from the socket on the side of the powerfc that's being used on the car. so an ECR33 PFC and BCNR33 PFC will have the 3 pin kit port on the side (white socket next to hand controller port). An RB20 Ap engineering PFC I would expect would have a 5 pin kit port, but it could also be 3 pin kit port - only one way to find out.

*** if you have 3pin kit port on your PFC ***

The car you are installing it into already had an existing boost control solenoid that is switched by the factory ECU.

This is usually a factory dual stage boost style setup that involves a solenoid opening at a certain set of conditions.

like on the GTST this is usually after 4500rpm the solenoid opens and it runs more boost - aka dual stage style.

the 3pin kit port PFC boost kit that you purchase comes with

- boost kit harness (3 pin version) - with 3 wires which run to the map sensor

- map sensor

- boost solenoid with plug

you don't reuse the existing boost solenoid that came on the car, but you re-use the wiring and plug that it has.

so on the GTST you simply unplug the std boost solenoid put the apexi one in it's place and it fits to the same plug.

no more wiring is required for the solenoid. you then install the map sensor and run the 3 wire loom with plug from the map sensor to the port on the side of the PFC.

plug in the map sensor supplied and the boost kit is installed ready for use. if you can't find the stock boost solenoid wiring on the car's harness you are looking for "wastegate solenoid".

once you find this wire this will be a switched ground wire that the PFC will switch based on conditions for boost control. you run this wire to the solenoid and then source 12v power from somewhere else for the other wire. if you get the wiring wrong it simply wont work and youll be unlimited boost mode, you can't get 12v and ground wrong, it doesn't complete the circuit.

*** if you have 5pin kit port on your PFC ***

The car you are installing it into doesnt have a dual stage style boost or a boost solenoid or possibly wasn't turbocharged from factory.

It could also be an ap engineering style PFC or a different version PFC that happens to work on the car

the 5pin kit port PFC boost kit that you purchase comes with

- boost kit harness (5pin version) - with 3 wires which run to the map sensor and 2 for the boost solenoid

- map sensor

- boost solenoid with plug

as there are no existing boost solenoid wires or "wastegate solenoid" wires on the loom the boost kit includes these.

you run the two pair wires to the boost solenoid and the 3 pair wires to the map sensor.

[Proximity Motorsport]

well shit, rb20 does not have a standard boost solenoid??? So does that mean that i cant use the power fc boost control kit?? or is there a way around it.

[r32woohoo]

If you read what he just wrote properly

it says that both kits come with it's own solenoid (map sensor)

Which means you don't need to have a standard solenoid