The previous owner converted the harness from MAF to MAP. I want to convert it back, but I can not find any wiring diagrams or anything for this. I have a WC ECU with a S14 SR20DET black notch top, if someone could help me out I am willing to pay.

Also could this cause my car to not boost? Basically my bov is not getting enough pressure to release, and the car stops letting me give it gas at 3000rpms, I've installed a new MAF sensor and made sure the wiring was right, but I am unsure if the map wiring could be messing with it.

How can I test the IACV or the Coolant Temp Sensor? Please just help me, I am sorry this is so much in a single thread but thank you.

Which ECU is it (can't think of what WC is atm)? The computer needs to be reprogrammed for MAF if it is the same computer that was previously running the MAP setup.