miatauser884

iTrader: (11)

Ok, I obviously started a complete **** thread earlier, and I replied to it adding this question to avoid starting a new one. No one appears to revisit the old one though, and I'm worried that I could screw up my car.

I needed to graph my auxCF input in order to see the A/F graph (a conversion has to be done). After doing this though I'm having an issue with the readings that i see. At idle it appears to be very rich (between 8 and 9), but throughout the map it will shoot back up to 19.44, then start reading correctly intermittently throughout the map. I'm wondering what is going on? Under boost it will show that the A/f is close to target. Does anyone have an idea as to why the A/F reading would be like this? I have an AEM wideband o2 without gauge. Could the o2 sensor be going bad? If anyone has or had this issue, please respond.

miatauser884

iTrader: (11)

It turns out the O2 sensor is fine, I was just running WAY to lean at idle. I installed RTlink which allowed me to monitor the parameters in real time. I adjusted the fuel curve near idle, my AF readings were in check.