Originally Posted by yamahaSHO
With 100% WGDC, overboost is big and instant. It really doesn't matter what your MBC is set at.
If there's a hose from the BCS to the inlet, you mean?
Because that's not been my experience either... I do get a couple psi of overshoot, but only briefly, and then it settles back down to whatever the MBC (Hallman RX) was set for.
I'm told that an EWG will help with the overshoot, and I'll test that theory eventually...