Hi guys .i;m from canada and i drive a evo 8

have some mods like:

Intek,full exaust (no cat is delete)

stage 3 atc

gredy pro ii boost control

now i need help because this

i just upgrade my fuel sistem with :

Welbro 255 and 800cc fuel inyectors

i did not touch my boost control but when i went for my first ride with the new fuel pump and inyectors ...i can not pass from 12 psi because is all that black smoke coming from the black
before i was running 20 psi no problem
please need some help tks.....

And wht;s the best set for the boost control.

 

best boost controll is a mnaual controller

 

Assuming everything was installed correctly your issues are occurring because your car is untuned. You wouldnt have any issues with basic bolt ons but I see you swapped your injectors which means that they need to be rescaled.