Oxygen to Fuel Ratio, EFR Gauges Info (Youtube)

[Dejure]

The oxygen sensor gauges caught my eye for the tuning potential, and condition tracking. This is a nice little video regarding them. It gives a lot of relative info on their use and installation.

A dedicated EFR gauge, in conjunction with a vacuum gauge, should tell users almost everything they need to know to get their rig to optimum operation.

Of course, they don't give them away, and there is that matter of installing the sensors.

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[nvrenuf]

Great video, if I have time I’ll be wiring up my AFR gauge today.

 

[xm20k]

I really should weld the bungs in for mine I have a pair of auto meter sport comps but been too lazy to get them installed she runs so good now I haven't been in a rush to get them installed.

 

[PrairieDrifter]

My Afr and vacuum gauge install were definitely eye opening.

You really have no clue where you're at tuning wise. Unless you've been doing it for 50 years, even then there's probably some left on the table.