my 1986 accord LX had a stock O2 sensor (Bosch PN: 12050) and it has a wire that leads somewhere where i don't want to chase it. i hooked-up an analog lead from the LC-1 to the stock O2 wire. i use the serial connection to my laptop as the free wideband gauge. i then installed the wideband sensor.
i updated the LC-1 firmware and programmed the two analog leads.
i added the LC-1, calibrated with free-air, i checked timing, tuned the car, lowered idle RPMS to 600rpms.
i burn very lean when idling (i think >20%).
while driving, at almost any speed under 3,000 RPMs i'm practically on 14.7%.
the digits flutter between 14.x% and 15.0%.
i bought the wideband so it can tell me when things may not be efficient... just my own visual like my vac gauge.
i am curious about the stock O2 sensor and it's purpose on a carbed engine.
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