The upgrade turbo, a GTX3076 has been tuned today, I'm very pleased with how it's driving now and no issues to report.
My stock VQ25det with ARP L19 head studs managed 350kw at around 24psi on a safe track tune. Hopefully I can get a good time at Sandown next Saturday, fingers crossed. I just got some sticky 245 Advan AO48's to help me grip, should be a great day.
Spectators are welcome by the way.