The Co-pilot works great via Boost GM/Ford, Not so on the ISBe, when you add Twins or a good single charger, the ISBe is capable of Producing incredible amounts of Boost independent of RPMs,Both GM/Ford create RPMs fast and than the Boost follows,so the Via-Boost lockup works great on those Engine trans Combos.
I hope for those that do Boost lunches, that you also have a Boost Check Book,Please Try and remember that you are lunching 7k plus down the track,Not a unit-body that weighs in at less than 3k.
( On Edit) 35 plus Psi on the GM/Ford and you are entering the danger Zone, 35 PSI on the ISBe is: You get the Point.