So I know everyone always says wideband is only accurate at WOT, but what at like 90% throttle, shouldn't it still be richer? just trying to clear up on the operation.

Thanks!

 

A wb O2 is accurate across the board (idle and cruise....as long as it is Before the cats, wot, etc.) AFR is going to be determined/read by the tune. For your SC setup, 90% throttle should have it going into open loop, giving a richer mixture.

Casey