Unless the dealer was a Mitsubishi dealer I doubt they knew anything about the car. A salesman will tell you what they think you want to hear.

As for oil in the intake, that's rather normal. The valve cover vents to the intake. Usually though, the oil you find there looks clean. I think oil comes over as vapor and then recondenses. The oil in the photograph looks more like crankcase oil. I'm not sure what that means but it makes me curious.

I think your next job is boost leak test.

 

Random question, but does the car go lean(er) at idle when you turn on the A/C, lights, or other electrical loads?

 

I just watched your 1st video again. It's too lean. All I can think of is to clean your air flow sensor.
Take a few pictures under your hood and post for us. Maybe something will stand out.

 

Need more info, really. A LOT of things can cause lean idle. There's, like, 1000 threads here on just that

 

Yup. I just did some digging on turbo leaking oil. Try to vent the your valve cover to air and see if your oil leak goes away. If you have too much blowby and your intake isn't relieving it (I think it is only 3/8"), you get pressure in crankcase which can stop your oil from draining your turbo. Then the extra oil pressure can force its way into your compressor housing.

 

yeah I made 25psi up around 5500 rpms I think. I have to find the video.

 

Probably not going to be his problem no the stock turbo. If crank case pressure was causing the smoke, he's have much a much larger problem.

 

yah I need to search how to do a boost leak test next. The dealership I bought the Evo from sells nothing but Evos, Sti, R35 GTRs, Supras, NSX etc.

 

Nope.

 

I don't have good lighting in my garage but here are some pics. If I have time I'll take some during day time.

 

It's been so long since my car was stock, but I think your DV is backwards. Was it positioned like this before you took off the intake hose?

 

What is this? Can you post close up pictures?

 

This is how i expect the stock DV is on stock intercooler pipes.

 

That is the HBC boost controller

 

Yeah that was the position. I hardly touched the motor till yesterday to look a compressor side of the turbo.