W212 E63 Gained +91WHP (+111HP) after retune

Hello,
would like to share a dyno graph of my tuned W212 E63AMG
car has upgraded cooling for turbos (larger radiator)
catless stock downpipes
76mm catback
98 octane fuel

on a base line run with stock tune car made 454WHP which is 553HP (18% drivetrain loss) (stock clained 525HP)
after custom tuning car made 555WHP but i reduced power down a bit to stay on safer side and have 0 timing retard
so end result for now is 545WHP (664HP)
and thats on baby boost 11psi tapering down to 8.5psi

Thats good!
Still too much boost and hp are left on the table

agree with better cooling and 98oct i would push for 15 psi

thats great. could i ask a few questions?