Need help with overboost/fuel cutoff
 

before i had new turbos put on the car ran fine except for all of the oil leaks, now that i have put on high flow twin turbos around 7000 to 7500 rpm the car lunges forward and looses all power, i just installed a boost controller to take care of the problem, but it persists with the boost being set at 9-10 psi

any help would be nice

r