I am getting ready to install a kit i have pieced together with old and new devils own stuff on my car with a m7 nozzle. The car is a 97 turbo and intercooled gtp at aroun 12-14psi right now. I have a wideband going on the car but what kinda of afr should i be shooting for. It has an old old progressive controller for the kit i am using. Also waht mixture should i inject. I am thinking 50/50 right now cuz its cheaper and i need the cooling and the octane.