Need help Adding a a/f gauge..

[wiplash2001]

I'm add a air fuel ratio and vacuum gauge on my Tahoe. Does anyone know exactly what 02 sensor to tap into and what color wire and a good vacuum line time use .. Thanks for your time.

 

[JennaBear]

Narrow band O2 sensor is not worth while to monitor. For vacuum, probably the only source is the PCV on top of the manifold.

I would recommend wide band if anything.

 

[ezdaar]

Exactly, do t waste your time with a ricer light show.
Aem uego is about the cheapest and best way to monitor AFR.
But you will need to add another o2 bung.
Any exhaust shop can do it for 20$ or less

 

[wiplash2001]

Awesome thanks for the quick advice. You guys rock.

 

[2006Tahoe2WD]

+1 for wideband
I'm curious why you want vacuum.
I'm considering trans. fluid temp. but this will be down the road.

 

[wiplash2001]

I got it for free when I ordered gauges. I already have Trans temp.

 

[ezdaar]

Vacuum, is a awesome way to teach MPG driving techniques.
Maintain high vac in manifold and mpg goes up.