[Mr.ac]

So..... let me get this right... installed new turbo had smoking tail pipe, freaked out, got it inspected, everything checked out, then tried other oil and no smoky tail pipe?

Sounds to like like a typical new turbo start up. There is always a 1-2 minute of smoky tail pipe at start up. Every turbo install/upgrade i seen in my mr2 club days always did that.

Then again the subie world has always been plagued by Honda nation mindset about "what type of air is best for our tires."

In conclusion I bet your tuner tweeked with the fuel map or A/F ratio. Just my cents.