Ohkay so I've recently bought a 06 Subaru wrx and keep getting the wastegate solenoid CEL. I look under the hood and come to find that there are no hoses connected to the stock boost control solenoid. But the is a black, twisty knob sort of thing which I think might be the problem. I'm a beginner so if you gents could let me know what's going on here that would be great. I've attached some pictures