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Originally Posted by sideview_180sx
for wideband I'd say the PLX or Zeitronix controller, if you use e-manage, since the PLX completely replaces the O2 sensor signal going to your ECU and gives you wideband readings while sending the ECU the fake signal as John stated. wireless and still able to tune. .
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Wrongo. It does send the fake signal but it doesn't clamp the voltage of the narrowband signal, so you can use it to tune the closed loop portion.
You need in this situation
Wideband O2 with a narrowband out
O2 signal voltage clamp