MidnightR32

how would I do that?

It was the wideband. 🤦‍♂️

Update on the car... I took video of about 9 minutes of it running, shortly after start up, and the car sounds OK? I replaced the ATS and confirmed that the new/old one are showing warming than freezing teamptures. I will replace the wideband tomorrow, but maybe this video can give some insight. Logs of warmup - https://drive.google.com/file/d/1bpvfmsLfZEjg_rBZw8IseAuM3iWq3BGN/view?usp=sharing

Ah, fair enough. For the IAT, I'm using a legit GM sensor that was used on the car prior to my current build. I'll get another wideband and IAT ordered and follow up when they show up. Thanks for the help.

Oh, my misunderstand. When the car was running, it sounded ok, but if I gave it any gas it wanted to die but caught itself afterwards. It's very different from how it was a couple months ago when it was warmer outside. The logs show that the AFRs are better during, what I assume, is warmup enrichment. Because it's cold, and air is more dense, should I work on the enrichment bit?

Unless my sensor just died, was only a couple months old, I strongly believe it didn't. How can I test it? I never mentioned it being 20:1+?

I have one and it was at ~43.5PSI.

I've uploaded logs / the current map to Gdrive if anyone has any ideas. https://drive.google.com/drive/folders/1FPnr22Z-EilG7tYdHSi0Qb07P2jfFLKV?usp=sharing

I'm running a Haltech Platinum Pro with the stock map for the RB20DET + tweaks for my build. When I started it this morning, the IAT was at 32F/0C (Outside temp was ~42F) and the AFRs went off the scale for my AEM gauge. I let it run for ~30 seconds then turned it off. I then did a smoke test, by hooking into a vacuum line directly behind the throttle body, and confirmed there was no leaks ( i let the smoke tester run for ~5 minutes / confirmed it was generating smoke before hand ). I then started the car again, after fixing a power steering leak.... and it seemed to be happy for ~30 seconds (was at ~11/12), but then seemingly shot back up to ~18 again. I then let the car run for a few minutes, thinking this was just cold start related, but the AFRs never came back down. I didn't let the car fully warm up, so maybe this makes sense, but I'm not sure what to do? The AFRs, when I last ran it, were normal, but because of personal reasons I haven't been able to break in the car. It was rebuilt last year. Engine / Mod list: Supertec pistons Spool rods Kelford 270 cams and Springs Stock crank Deatschwerks 900cc injectors Walbro 255 (Wired directly to the battery relocated in the trunk) NKG Audi R8 Coil packs + Conversion Harnesses from Wiring Specialties Holset HY35 turbo Haltech Platinum Pro ECU Haltech boost controller (wired in for high boost RB25 Neo transmission + needed bits for the speedo to work