Still no mapping yet, my boost controller crapped out so I installed my manual boost controller. No surge at 15 psi, no surge at 17 psi but the surging starts at 20-21psi. Ill get some maps tomorrow hopefully. I haven't had a place to go all the way to redline safely.
The surging is very visible on my boost gauge, the bouncing needle is pretty apparent. I don't think my bov is sprung too tight because I can make it open by gently closing the throttle under 5 psi of boost or so.
Car feels very slow at 20psi as well when it starts surging.
Evan