Ok I took some pictures of all the suspect areas of the engine bay. I'm hoping someone more familiar with the SR20DET can help me identify some of these oddities.
Here you see the sensor that I was told is causing the engine to run at safety boost level on the left. It's got 2 nipples which are not connected to anything (bypassed?). Behind it is another one which only has 1/2 nipples connected, and the top one appears to be squirting a little bit of oil out, which is concerning. I have no idea what either of these sensors does, please help me identify them.
Next up, I'm guessing this is where the hose running out of the PCV is supposed to connect, which is now just plugged with a bolt. Please let me know if this is correct. I've ordered a new PCV valve in case it's failed, and I intend to remove the breather and reconnect the hose the way it was intended so if this is not where the hose should go please help me find the correct place. (Yes, the intake piping is disconnected from the turbo in this pic)
Next up, is a very suspect severed hose behind the engine. Could this be the A/C piping from the original engine? I sure hope so. Please confirm, sorry for the darkness, my batteries were low and I had no power for flash. The metal pipe it's attached to runs behind the firewall.
Those are the extremely suspect areas, but there are still a few other things which concern me. For example, what the hell is this hose doing that bypasses the MAF?
And lastly... another strange hose, running from the intake manifold to the intaking piping just before the throttle body.
Anyone who can explain some of these strange artifacts in this engine that I'm not yet very familiar with, I would VERY much appreciate it!! Thank you!