I have a wide band in my RX7 and everything seems good, alittle too good. Just cruising around I get an A/F ratio of exactly 14.7 When I go WOT it'll change a bit and drop to 12, sometimes bury itself into 7. Just wondering if you guys know if it's normal for a car to run 14.7 while cruising. I thought closed loop was suppose to correct the a/f ratio but had no idea it was that exact

 

they do usually run leaner in part throttle conditions... as long as full throttle you're in the 12-13 range you're ok

 

14.7 is what the PCM will look for at cruise. That is fine. You're looking for around 12.5 to 13 at WOT. A little richer with blower/nitrous.