Originally Posted by SRT6 Gang Member
Yes, I understand the relationship between the O2 sensor, STFT and LTFT. The O2 sensor (narrowband AFR) fluctuates just as much as the STFTs trying to maintain 14.7 AFR. Not good for tunning.
lol..a small baby..lol. Okay, alright, I must compose myself...lol!
You got it 99% right, but the O2 sensor voltage is fluctuating as a result of the mixture crossing from rich to lean trying to keep 14.7. The switch point of the sensor. Notice on your graph how the trims are going up and down across the center (.45volts).
Anyhoo, my fuel trims are now much closer to zero, so these injectors are not a huge step up. I'll get the laptop on there tonight and log some afrs. Cheers! Tuna.