[Blake]

Here is the scoop about 800 miles ago i got my car tuned at EFI with the Below mods. soon after i got my tune EFI and I realized that i did not have the barometer sensor plugged in (my bad). so EFI and I started trading maps over the web to try and clean up the map (Thank to EFI for great customer service and support). During this time the weather started to get bad and i was only able to do about one log a month. While i was waiting to do more data logs i would run the car from time to time and started to notice a oil leak. After some digging and some time under the car i noticed that it looked like the oil was coming from the compressor of the turbo. so i removed the turbo and found the compressor housing full of oil. I check for shaft play and there was not any and the turbo spins fine. So after several emails, pictures, and videos back and fourth with ATP they determined that my crank case is getting pressurized and casing the turbo to "Force" leak oil.

ATP email:
"It's quite easy to diagnose. You have breather hoses coming out of each side of your engine (valve covers).
There are two breathers on each side of the engine. Two of them merge alongside the topmounted intercooler and two of them merge near the compressor inlet.If, when you modified the breather port near the compressor inlet, you compromised the vents or "plugged" them, then you've got trouble.

What happens is if you compromise the engine's breather ports and the engine is not allowed to vent the crankcase, the positive pressure will build inside the engine's case. What then happens is the pressure will find its way up the oil return line into the turbo since the oil return tube is directly connected to the engine's crankcase.The reason the turbo leaks oil is because oil that is trying to drain out of the turbo has nowhere to go (blocked by pressure blowing upwards from the crankcase into the oil return line). The oil is then *designed* to leak out of the shaft seals and that is how you ended up with all that oil in the comp housing and subsequently in the charge pipes.Good news though:If you clean up all the oil and fix the blockage in the breather ports, the turbo will work just fine again and no harm is done."

So today i went over all my PCV breather lines and pulled the PCV valve and the lines are run correctly (for the APS turbo inlet). I also checked the valve (shook it and it sounds like its still good) and it is ok.

My questions are:
what is causing my crank case to pressurize and cause my turbo to leak?
Does APT's diagnoses make sense?


Modes (not all just the main ones):
ATP GT3582R (stock location)
Perrin FMIC
Aquamist HFS5 (90/10 mix)
850 cc injectors
TGV deletes
Equal length headers
Element down pipe
Invidia 3" race N1
Cobb AP
KS tech CAI
APS turbo inlet