Update.. I installed a airbox and the piping and put the AFM sensor back in, the sensor looked fine.

Started the her up and she seems to be idling at 1500Rpm now and not dropping still stumbling from 1st and 2nd gear and a rattle when I turn the car off. And my check engine light is still on.

Any ideas to what it could be now??
New AFM sensor maybe?


using the Perth-WRX mobile app