do you have a scanner atleast? why i ask is if u know a local around the area that has a PT or HP tuner they can unlock your IAT spark advance. once u have that opened and have it adjusted accordingly to either add/subtract timing based on what the IAT is registering. the next step would be is cut off the iat sensor functionality itself and reroute the wires to something that u can fake what the ambient air is to the pcm. what u can replace the iat sensor with is something that can adjust the frequency or ohms the pcm reads from the sensor that it incorporates into temperature. a really good tool is whats known as a potentiometer(just google-search it) or nicknamed a "pot". that way u can add/subtract timing whe in PE/WOT if u see KR or not. its basically what a "happy knob" as well as the timing change on the ICCU does.