Dave,

I think we are at an impasse here.

Yes you are right, only in that the MBC will solve the boost lag problem

BUT other problems are created. As stated before I cannot use an MBC because the ECU always wants to adjust the max boost level. See the earlier comments about fuel cutoff. 21lbs of boost is engaged when the ECU allows the equivalent of the 'scramble mode' from EVCs. This max setting is not a permanent state. Both the ECU and boost control valve have to be in harmony to achieve maximum boost w/o fuel cutoff.

Does any one know if the solenoid boost valve from EVC kits are sold separately? Please help me out here.