Nikzilla

Today I spliced in a consult port and hooked it up to Datascan to try to figure out why my SR20DET blacktop isn't running very smooth. It runs better with the O2 sensor unplugged, with the sensor, it leans out if you hold it at about 3,000 RPM. My theory was that the O2 sensor was dead, causing it to lean out during close loop, and smoothen out during open loop (the wideband shows 11 during WOT).

Anyways, after I opened Datascan, everything seemed to function rather well, except the O2 sensor didn't seem to be oscillating as well as it should.

But then I opened up map trace, and my ECU refused to trace anything but a line.


This was after 2 minutes of driving, including 1st gear WOT.

I used the default configuration, here is a screenshot for reference.



Here are direct links to 2 driving logs in case anyone wants to take a look.
One
Two

Does anyone know why this is happening?

OnTheChip

Try changing TP MSB Address to 4251.

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NismotronicSA - Speed-Density Tuning for Nissans

Nikzilla

That did the trick!

Thank you kind and intelligent stranger!