A/F Ratio (per gauge)

[Max2k1Camaro]

Well I finally got my gauge installed! Anyway, when I start up the car, at idle it shows a STOICH(correct) mixture, but at wot, it show slightly past the stoich into the rich.

Is this normal? I didnt put my whisper lid back on yet so I am guessing that I will be putting in more air...

Comments? Suggestions?

[John_D.]

Yep, stoich at idle and part-throttle. Burns cleaner that way. Rich at wot, gets more power, and is easier on the aluminum in the pistons because it burns cooler than a lean mixture.

Cooler as in 1600 degrees vs 2000 degrees... [img]smile.gif[/img]

(or somewhere in there)

[ August 11, 2003: Message edited by: John_D. ]</p>

[1998silverbird]

I have a question.. I have my gauge in but were is the o2 sensor wire located at?? I have a 98 Firebird.. Thanks.. Its better to run a little rich then a little lean..

[95slowcar]

---98silverbird---

Which O2 sensor are you planning to tap into? I'll look up your wiring diagram in my Chiltons.

[ August 11, 2003: Message edited by: 95slowcar ]

[ August 11, 2003: Message edited by: 95slowcar ]</p>

[1998silverbird]

Well which one would be the best?? Maybe the one after the cat?? If you tap into the left bank one then your only getting the readings from that bank.. Same with the right side.. So I guess the one after the cat.. Thanks..

[95slowcar]

<blockquote>quote:</font><hr>Originally posted by 1998silverbird:
Well which one would be the best?? Maybe the one after the cat?? If you tap into the left bank one then your only getting the readings from that bank.. Same with the right side.. So I guess the one after the cat.. Thanks..<hr></blockquote>

If you are going with the sensor after the cat, the wire you want should be dark blue. This is a heated O2 senser so you will have four wires. Pink, blk., grey, and the blue one. You want the blue one. I would use a quick connect wire tap, so that you don't have to actually cut the sensor wire. If you have any more questions just ask. [img]smile.gif[/img]

[1998silverbird]

Cool.. thanks for the help..

[Max2k1Camaro]

Friday I am going to creat a toggle switch and wire in the driver side o2 sensor as well and have a switch between the 2 manifolds to see if all is running well. I dont want to do a y pipe or past cat sensor feed to the guage because it would be harder to diagnose incorrect a/f mixtures. This way I can switch between them and see where the problem is, if there is a problem. Ultimately I wanted this gauge to analyze the ratio after cam install and other upgrades.