I have a host of issues and tests to run so I'm not sure how many to bring up in one post. The car came with an aftermarket air intake so I found a TDI stock air intake that is now in place along with a new Mann filter. The airbox came with a MAF (as well as having the original MAF). I noticed, after reading the post about cleaning the snow screen, that I'm missing the snow screen. The snorkle is there, bolted to the fender, but the other end, opposite the airbox, there's a gap between the snorkle and the location that I determined channels the air into the box. Should I find this part before I test the MAF as outlined in the write up? I replaced the turbo actuator because the car came with a new one (the old one was deteriorated). I installed it, along with a new vacuum line, but still need to make sure it's adjusted properly via the write up I found for that. I have no "woosh" that I expected with a turbo. I have slow and steady power and constantly have people travelling behind me go around without patience when accelterating from a stop. VCDS shows actual boost not matching expected boost. I have a new N75 valve that I can install, but thought I should first make sure the acuator is adjusted properly. Also had a ton of oil (like 1/2 quart) in the intercooler - and from what I've read, it's normal to have some oil, but certainly not normal for the amount that came out. I replaced crankcase breather pipe and rubber grommet into valve cover, but not the actual valve before I discovered the oil. Today, after a fresh oil change and after driving about 200 miles, the oil level is down just below the low oil mark. Have not yet pulled the lower intercooler hose to see if any oil accumulated there, but I suspect that could be where the oil went. Right now, CEL is not on, but VCDS has found a recent code - P1556 Charge Pressure Control, negative deviation, intermittent. Sorry for bringing up so many different things in one post, but I know the system should work as a whole, and I'm sure there could be some issues that directly correlate and others that do not. Thanks for any input on where to start.