Blowing smoke

[balthus]

- what vehicle you have - Fiat X1/9 with K20A3 from a 2003 RSX
- serial number of your K-Pro: 51894
- version of software being used (from Help, About): 4.4.3.0
- ECU part number (starts with 37820) and serial number (the number under the part number) 37820-PND-A06, 2062-602363

Hello,

This is my first swap, and I was hoping that someone could kindly look at my calibration and log and give me a tip as to where to look.
The car is a Fiat X1/9 with a K20A3, type-S intake, custom exhaust with single O2 sensor.

The problem:
The car fires right up but is idling roughly around 1200 rpm. It is blowing out a ton of gray, foul-smelling smoke that is stinking up the house and making my wife unhappy.
I'm not getting any MIL errors. I notice that the AF is stuck at 10.7. I've tried 2 different O2 sensors (Denso 234-9005). I've tried both open loop and closed loop with the same result (open loop runs even more roughly).
The wiring to the ECU is custom, so it is entirely possible that I messed up, but I have checked it numerous times and all seems correct.

Again, any hints by looking at the calibration and log would be greatly appreciated.

Be well.

[Spunkster]

The datalog is only 22 seconds long and the engine is completely cold. Really can't tell a whole lot from just that.

[balthus]

Even in those 20 seconds it's filling up the garage with thick smoke - not safe to leave it on for longer.
Do you see anything obvious (e.g. the AF means O2 sensor not working, or the MAP is not reading an accurate number)?
I can put it outside and let it run for a while tomorrow, but it's clearly way out of spec by how roughly and inefficiently it's running even when cold.

[Spunkster]

It could be a mechanical issue, fuel issue, blown head gasket...Not something that can easily be diagnosed form just a datalog or description.

[balthus]

Okay, thanks. Odd as everything is brand new and the engine was just rebuilt. The O2 sensor readings don't make sense. I'll figure it out eventually.
Cheers.