Well i just switched my throttle bodies beacuse the fast idle screw was stripped on my old one and made my car idle at 2500. i got the other TB in there and turned the idle down now i have code 7 and code 43. 7 is TPS and 43 is fuel supply system. are these related? or is it just that i turned my idle down too much and now im starving the engine of fuel on idle? ill mess with it more but any info would be much appreciated. 91 si with b16.