Originally posted by qtiger
Can be solved, but you will lose accuracy UNLESS you employ a great deal of circuitry.
Whether or not it will be more accurate than a stock O2 sensor... :dunno:
You could use a stepdown transformer, but you lose a bit of your accuracy to inductive reactance
You'd also have to engineer a bandpass filter and/or voltage spike suppression circuit to prevent really bad things from happening to your ecu.
Its a good idea overall in theory, but with some of the more powerful PEMS coming out, Wideband logging is already available and you can tune the fuel map right there without having to devise circuitry to fool the ecu. :thumbup: