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FYI - The MSD stuff isn't necessary until you are making fairly mad power. As for the IAT, 3 bar MAP sensor and boost solenoid:
Boost solenoid gets wired to A6. Assign it to PW2. As for the IAT sensor, you can use the wires going to the stock AFM's THA and E2 pins. Use the stock MAP sensor's wiring for the GM MAP sensor. The wiring is VC for VCC+ power, E2 for sensor ground and PIM for the ECU signal wire. That all should be there in the stock MAP sensor's plug.
If you want a completely PnP setup, I can get you the part numbers for the pins with pigtails so you can wire it straight into the EMS. This way, you can simply pull these pins out of the stock harness and reuse them if you intend on putting the stock ECU back in for any reason (like emissions testing).
Don't forget to rescale your fuel map based on the new MAP sensor.
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