Getting some huge AFR swings on cold starts, even when it's pretty hot outside (90*F).
Here's a log that I started right after it fired up:
https://datazap.me/u/fino/cold-start?log=0&data=3-4-7-8-11-12It looks like fueling final base is dropping right when the AFR starts to lean out, and then it overcorrects by adding a bunch of fuel and the AFR goes super rich. Then FFB drops again and the cycle repeats. It will do this for 1-2 minutes after a cold start and then suddenly smooth out around 120-130 ECT. Hot idle above that ECT is super smooth.
I've replaced the front O2 sensor recently as well. Any tips on troubleshooting this? I thought it was a VE issue, so I tried adding a bunch of VE to the higher load cells it hits (~10psia) which didn't seem to help.
This is on the Carberry ROM FYI, flex fuel as well. Currently has a tank of E80 in it.
