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Logging wideband with Tactrix
For those of you wanting to log with Tactrix OP2, you can wire your wideband signal to OBD pin 12 which is unused in our car. The ADC in the box can read voltage off pins 8, 12, or 16. Pin 12 is connected to the tip of the 2.5mm jack also if you don't want to hardwire - but it is a pain plugging and unplugging every time.
I've put a PLX Bosch LSU 4.9 sensor in, wired the 0-5V output to pin 12 on the OBD plug, and wired the 0-1V narrowband output back to the rear O2 input plug (with a 20 ohm resistor across the heater terminals). Works great.
I like the Tactrix OP2 for logging. Small, fast, unobtrusive, and I can analyze all my logs in a large batch quickly with Matlab.
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