Im new to using a wideband lm-1 meter and i found this chart online. Im trying to figure if the reading im getting from my car are correct. Are the reading in the chart below good to use as guide lines????

Cold Start (first 30 sec)
11.5-12.5 AFR

Idle
12.8-13.5 AFR

Part Throttle Cruise
13.0-14.0 AFR

Wide Open Throttle
12.5-12.8 (values down to 11.5 may be used to reduce detonation) AFR

 

If your car is fuel injected, idle and part throttle will (should) be right at 14.7-1 in closed loop. The idle and part throttle numbers on your chart are too rich for open loop also. The optimum WOT air/fuel ratio depends on your combination and the fuel you are running.

Good luck, Ed