Hey guys, parts are rolling in for my turbo setup, and I decided to throw on my A/F and boost gauge while i wait. The A/F Gauge is hooked up to the white input on the ECU, but it seems to jump back and forth while just cruisin. It looks accurate when I get on it, but just cruising along it seems like its on crack. Is this anything to be concerned with? I know its not the best, but a EGT and probe are much more expensive and I cant afford them now.
Thanks
Jim

 

I think that is what it is supposed to do

 

That's what they do. O2 voltage only stabilizes at WOT, so that's the only tuning you can do with them. Other than WOT, the readings are gonna be pretty erratic...

 

It just looks cool when not at WOT.