I was installing my new UICP when i noticed what looks like an engine oil (dark brown) residue inside the turbo outlet pipe, it's not a lot though.

I'm aware that the turbo is lubricated with the engine oil.

Is this normal?

Thanks.

Do you have an aftermarket oiled filter

+1. It's usually signs of the inner seal getting worn. When it gets really bad you will start seeing your air filter get saturated.

Excessive blow-by can cause this

Generally, it's from oil getting recirculated through the PCV system. Yes, it's normal.

This is what I originally thought but was just checking to see if he over oiled his k&n. Install an oil catch can and search. Good luck.

no oiled air filter, using oem panel filter

Then it's probably what spdracerut suggested.

Blow by is quite normal. However, the amount may not. I started noticing blow by in my intake pipe on my evo 8 being recirculated through the system and put back in there. This was then going into the turbo and intercooler lines and intercooler. I installed a catch can, and so far so good.

Get a catch can.

The stock crank case pressure system is designed for a stock boost levels. Replace your pcv valve and get a catch can on the line going to the intake and everything will be ok.

However, there should be minimal oil residue. If you have a pool of oil or a good amount, you have other problems.

Thank you very much for everyone who responded.

The oil residue is minimal i would say, it's not runny of dripping.

As mentioned it's from the PVC system, is normal and is nothing to worry about.

I attempted to install a catch can to prevent this, but it ended up still getting through. I think I tried a universal Greddy can and switched to a Perrin can without any better results.

completly normal, a little oil does the turbo good =>

But not the intercooler.