Air/fuel ratio gauge

[Daryl]

So I will need a bung welded onto the other exhaust down pipe with an additional 02 sensor? Then do I tie the like wires together to the one gauge??

 

[Daryl]

Would this work as a 2nd O2 sensor? Not sure if I need to specify upper/lower stream, left bank, right bank or ???

1995 Ford Mustang V8 5.0L Front O2 Oxygen Sensor Delphi ES20316

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[duh09]

You would need a full 2nd wideband setup to be able to see both banks if that's what you wanted.

Honestly, they're not great except for having a lightshow in the car and to be a big red flag if something goes badly wrong, but anytime I've had one, I spend more time stressing over it without there being an actual issue.

Having a gauge for tuning is handy, but usually they'll want one that can datalog, because they won't be watching the gauge as much as watching the log after the spin. They'll have an eye on it to make sure it's not going super lean or anything, but generally, it's a tool to build a tune, then it's just there for when things go south quickly.

I have a single O2 wideband for the Microsquirt, and no gauge in the car. It can be monitored on the laptop while being tuned and it will datalog a run so there's info to build off of. Having both banks would be more ideal, and I may toss a second one on when the blower goes on, just to make sure everything is happy, but again, there won't be a gauge lightshow in the car for my personal preferences.

 

[GTamas]

If it' a dual-gauge bezel, you could swap the A/F gauge to an engine oil pressure, that could be more useful. Keep the 02 sensor and the bung on the pipe for when you need to tune the engine.

 

[Daryl]

duh & GT,
Good call both of you. Might just take your advice and get rid of the AFR gauge for something more useful. Thx!!

 

[white95]

Don't be so fast to nix the idea of a wideband. I have three The Holley references a single wideband and I have a Innovate DLG-1 to reference both banks. Both are viewable on one gauge.



Absolutely necessary on a simple, NA setup? No.

Why bother, you ask?

I wanted to have a way to check the Holley without lugging my old Innovate LM-2 around.

 

[Daryl]

Don't be so fast to nix the idea of a wideband. I have three The Holley references a single wideband and I have a Innovate DLG-1 to reference both banks. Both are viewable on one gauge.

View attachment 32547

Absolutely necessary on a simple, NA setup? No.

Why bother, you ask?

I wanted to have a way to check the Holley without lugging my old Innovate LM-2 around.

View attachment 32546

No, definitely not jumping off… just stewing on it for a while

 

[Daryl]

If it' a dual-gauge bezel, you could swap the A/F gauge to an engine oil pressure, that could be more useful. Keep the 02 sensor and the bung on the pipe for when you need to tune the engine.

In addition to the stock oil pressure gauge??

 

[badass98svt]

In addition to the stock oil pressure gauge??

The stock oil pressure gauge doesn't really do anything to speak of

 

[Daryl]

The stock oil pressure gauge doesn't really do anything to speak of

Ah. Disappointed, but not overly surprised. So can I bypass it? Or just leave it alone and install the mechanical oil pressure gauge?

 

[ttocs]

All it tells you is if there is 6psi of pressure.

 

[95opal]

Ah. Disappointed, but not overly surprised. So can I bypass it? Or just leave it alone and install the mechanical oil pressure gauge?

The oil pressure and coolant temp gauge in the stock cluster are as useful as tits on a bull.
Those would be the two gauges i would replace in order to see accurate readings. I prefer electrical gauges for a street car.

 

[GTamas]

The oil pressure and coolant temp gauge in the stock cluster are as useful as tits on a bull.
Those would be the two gauges i would replace in order to see accurate readings. I prefer electrical gauges for a street car.

I know about the oil pressure gauge, but what's with the coolant temp?

 

[95opal]

I know about the oil pressure gauge, but what's with the coolant temp?

On the stock gauge its labeled H and C. Which doesnt tell you the temp of your coolant in any shape or form. By adding a coolant temp gauge you can monitor it by degrees. Meaning you can actually see what temp its running at accurately.

 

[badass98svt]

What he said for both gauges. The oil pressure and water temp gauges are NOT accurate. That is a fact.

 

[cobrajeff96]

There's a way to make the OEM gauges read accurately, www.accutach.com

And you can get custom intervals printed for your gauge readouts, like attached, at BlackCatCustoms.

 

[Daryl]

A light rekindling of an earlier thread:

Here’s my gauge cluster. So if I abandon the AFR gauge dilemma, what would be most useful to put in? I have an oil temperature gauge

 

[ttocs]

you would be better off putting an aftermarket coolant temp than oil temp. The stock coolant gauge goes through the computer which dumbs it down a bit to not scare the driver. I personally saw in phoenix on the dyno after a bad head install where mine was hot enough that the ecu was pulling timing to try and cool itself, but the temp gauge never got more than 2/3 high.

 

[Daryl]

So I guess there’s merit to the earlier posts saying the stock gauges are basically useless?

 

[Daryl]

Like this?? The all black one, I mean

https://a.co/d/dpZOMun