In the begining I wanted to apologise for my written english...
I'm new to this forum, I'm suprised I've found it after such long time...it would be easier with all these informations gathered here.
I own Astra QP-T, slightly modified ~350HP and 460nm of torque
I had really hard way and put a lot of work to reach such parameters...
Engine is completly rebuild with garrett gt2871r and for sure it's not my last word.
Here are two pictures how it looks
here is a dynograph from mapping, not final one
And finally my question, it has been more than year from last big work around the engine, I forgot what size are the banjos connectiong oil to std. "oil-cooler". I'm changing it with aftermarket cooler so I need new oil lines.
Thanks lot, I hope I'll be able share my experience and help You in Your problems