When does the ecu define the open/closed loop? as in at what percent throttle does the ecu switch from open to closed loop.
Is there not a wire in the ecu that carries the rpm signal since I think the auto tranny needs a rpm signal does it not?
I have heard many a theory on wot afr's and...
Does anyone have a ecu pinout diagram, I was hoping to install an air fuel controller to go with my wideband.
Also how does the ecu tune? closed loop, open loop or is it a little bit of both depending on throttle/load, thanks.