Update on the problem..... RAC came out yesterday morning, located that a sensor just after the cat had gone, due to a wire burning, which blew a fuse which in turn is used for the ECU and fuel pump, fuse no5 on the circuit...... car i now at the mechanics awaiting fixed as the rac fixed her up to get me to a garage.....

Problem now is i rang subaru yesterday to get an 02 sensor from them and told me there is two down bank 1 of my downpipe one is the 02 and the other is a fuel/air sensor ( i think the fella said) bit of a difference in price £180 or £315......

My mechanic said its the sensor directly after the cat, has anybody an idea of what one it is? its a multi brown plug?

 

yeh i think the sensor you need is an exhaust temp sensor

 

http://www.scoobytuner.com/graphics/ExhuastDiagram.jpg

Have a look at this diagram, the Bugeye WRX has 3 cats in all...........If you have an STi then you do not have an EGT sensor.

Does this help?

Shaun