Link G4X Problems on Subaru Wrx 2006

Hi ! So i just bought a WRX with some problems it seems. I have issues with the idling and overall performance of the car. Cant find out who tuned this car or how stuff is setup, some strange history... hoping that someone here can point me in any kind of direction regarding possible faults , broken sensors and so on... ive never done any kind of tuning to a car before but ive built alot of cars and i know what im doing mechanically, got this pretty cheap so i figure i can learn on this. Atl

Well took the engine out last night so some progress is made. Yeah i think ill go with arp head studs. Just dont wanna throw to much into this car, the main cars i waste my cash on is the c6 and a gt40 im building. Really just bougt this to have some fun on the ice, that went well … Yeah i mean the turbo oil feed lines , but the hardlines under look bad also so i will make some new with alu piping and weld on some an connectors there aswell. Atleast now i can see whats actuall