Several ppl would want to add a turbo, or twin t3, but from what I gather the problem is if you try to add boost the ecu will not read it.

don't know what they did to finally make it work, and I don't know how much boost he is getting, wish I did, and how it is working.

might have to put resistors in the pressure sensors to trick the computer then tin to make it run rich, which will even out.
depending on which resistor to be used will adjust sensors voltage and they will read less than what actually is.

so ecu would just think it is tuned to run rich.

every atmosphere of pressure doubles power, so at 14.7 psi you will double you engine hp, but also have to account for the power used by supercharger / turbo.