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