at least for me. I had tried once on 15psi and I swear I will never do that again :( Car was really swaying too much left and right after 1/8 mile and I lost my confidence and back off the throttle. Sorry again for your lost and I hope everything works out for you.
1990 Nissan 300ZXTT Twin Greddy TD06L2-20G 745rwhp 593rwtq (26psi no nitrous) 10.9 @ 139mph 1.75 60ft Waiting for stronger wastegates spring