Type-Z goes under the knife again

Tomorrow I’m taking my car back in for some more work. We’re going to be uninstalling the AEM AFR gauge, and replacing it with the stock primary O2 sensor. That way, it can be wired directly into the K-Pro ECU, and will therefore, be datalogged with the rest of the sensors. This will also be nice for tuning. I also hope that we will be able to get to realigning the rear bumper (as it is slightly off on the driver’s side near the taillight).

Overall, I’m excited just to be getting the new O2 sensor wired up. It will be nice to see how the car runs with all sensors functioning properly. Changing the O2 sensor back to stock and wiring it into the K-Pro ECU has a good number of advantages:


  • No more check-engine light (CEL).
  • Most accurate reading of AFR.
  • Auto-correction of improper AFR based on the loaded calibration.
  • Ability to program in the various target-lambda values and have the K-Pro auto-adjust.

All that goodness just from swapping out one sensor! All of the AFR portions are incredibly beneficial because having a proper AFR reading will allow the K-Pro to dynamically adjust the injector flow. If it senses that the AFR is too lean, it will cause the injectors to fire harder and pump in more fuel. Contrapositively, if the AFR is too rich (like it currently is between 4000 and 5500 RPM at the VTEC point), the K-Pro will automatically reduce the injector duty to normalize back to the target lambda.

Hope all goes well. 🙂

|:| Zach |:|

1 comment

    • Sam on Tuesday, 27 February 2007 at 17:04
    • Reply

    I’ve been awaiting a new blog patiently for a week… when are you going to deliver? 😉

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