Ecutalk Log. Some Problems With My Rb20 Cefiro

[rayj]

Hi

I've attached 2 pics showing some output from ECUTalk. I'm getting some really annoying problems.

Car is a stock standard RB20DET Cefiro, apart from exhaust and intercooler.

1. Flat spot on acceleration. On initial acceleration timing gets retarded, then after a while it pulls back up again. You can see the dips in Graph 2 every time I accelerate.

Graph 1 - RPM. Graph 2 - Timing

2. I'm not sure about the data in this one. You can see the oxygen sensor is more or less working as it should, and that the car is running rich. But Graph 2 has me worried. Is it normal to have so many lean spots?

Graph 1 - O2 Sensor. Graph 2 - F/B O2 Lean.

Thanks for any help

[Dose Pipe Sutututu]

narrow band sensor doesn't give a voltage to dictate the o2 reading just goes up and down on closed loop and ecu adjusts a little to hit stoichiometric