get it tune first and see what happen if u still have a problem try to replace the distributer ignition with out using the msd cause i have a b16 turbo too with msd and when i hit vtech i drop power and still holding boost around. i lost power when i vtech 20 horse power nobody know what is going on and when u think you solve the problem see jap his good nobody tune my car that runs good.

 

wow