Quote:
Originally Posted by rmay635703
Not sure what your asking
Modern cars have 2 o2 sensors a decent EFIE on each allows you to trick the car into thinking you are running rich and lean out.
A decent EFIE is variable and allows you to intercept your o2 sensor signal and set your AFR after you are up to cruising speed.
However a narrow band car looses resolution slightly above 15:1 AFR so you can’t normally get a car to run AFRs much above 15.2:1 with an EFIE
And no I’m not advertising, you can build an EFIE with less than $5 of parts there isn’t much to one.
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This is not true in my experience. GM put lean cruise into the Australian LS1 Manaro that wore standard o2 sensors and with a simple click of a button in tuning software you can turn the feature on in U.S. sold LS1 GTO. 16.3:1