Hondata

For NA K20A2...which mode is safer to run as a daily driven car (open or closed loop)?

closed loop is best.

Will the primary O2 sensor be utilized at all under closed loop, because my O2 sensor is messed up. The AF is reading 28:1 under open loop and 38:1 under closed loop. If I run closed loop it wouldn't matter what the AF is reading right?

K20EG wrote:Will the primary O2 sensor be utilized at all under closed loop, because my O2 sensor is messed up. The AF is reading 28:1 under open loop and 38:1 under closed loop. If I run closed loop it wouldn't matter what the AF is reading right?

Closed Loop's whole principle is utilizing the primary o2 sensor in achieving a constant 14.7 a/f ratio.