So here's the deal, I'm trying to help my dad tune his car for the up coming event here in Phx. I've been away from the turbo Buicks for a while, so I don't remember what a good range for O2 voltage is & what it means (rich or lean compaired to a high or low #). We went to the track on Fri and the DS was reading 780-810 on each of his runs. The motor is stock with a hot wired Walbro, afpr, 50# inj, Precision stock loc intercooler, & a 3" dp. I did try finding it, but couldn't find the definitive answer I'm looking for. Any help would be apreciated, thanks.
Direct Scan O2 voltage
- Thread starter Googs
- Start date
mikestertwo
Well-Known Member
- Joined
- Sep 13, 2006
Your O2's look good. That's about where they should be at WOT. Higher numbers are richer, lower is leaner. Numbers should be in the high 7's to low 8's at WOT 
