topend surging w/ Vortech

[QUIKSVT]

I installed a Vortech on my 95' Cobra. Car is otherwise stock. Boost is stock 6psi... I have a problem with breakup once I get into boost. I've tried timing anywhere from 10* base up to 17* base. I gapped the plugs anywhere for 52 thou down to 36 thou. Nothing seems to help. It seems like it blows plugs out. It is worse if I try to pull timing with the MSD boost retard controller, no matter my base timing. When it doesn't surge too bad, it detonates. Any help is appreciated. Thanks.