51 is tps
http://www.cygnusx1.net/supra/librar...fi/FI_101.html
43 = no starter signal
http://www.cygnusx1.net/supra/librar...fi/FI_042.html
can i ask why you advanced the exhaust cam?
there's no real need... set it back to stock and set your ign timing to 10BTDC and your idle should go back to normal unless you have vacuum leaks etc
let me know if you need anything further