I was driving for almost a week after installing my headstuds/twins when I realized that my oil was contaminated by fuel. I took both valve covers off and checked all the return lines. The return line that connected to the p/s head seemed loose so I put everything back together.
I just reinstalled everything and drove it for about 30mins and it still smokes a little. I checked the injector balance rates w/ a scantool and everything seemed good. could there still be oil/fuel lingering in the turbo? Or is it something else? What else should I check and how should I do it?
Also, my oil pressure guage is maxed out and need to check that as well.
Thanks, -Chase

Too much pressure can have an effect on turbine intake seals.

I took one springs off the wastegate. If I overspun the small turbo it was only for a short period of time. What is the best way to check?