i am running a 99 accord motor (2.3l f23a1) in my 92 hatch. i also have my ecu or chip custom tuned by locash... i think the program used was Neptune.. anyway i keep getting a code 43 i searched and found and was also told the code 43 for Fuel supply system or o2 sensor the car is running rich.. the car will not pass the AZ emission test.. am i running rich becouse of the chip, a bad o2 senson and also what o2senson should i use one from a civic or one from the accord.. oh and when the check engine light comes on the cas stops stinking and my fule is running 40psi any on have any ideas

thanks