A/f Gauge Accuracy?

[Slapstik]

Have a few questions if anyone can help me...

I Have an A/F gauge, it has a sweep and is also digital.

It connects to the 02 sensor signal wire for its feed.

Was a "Drift" gauge bought out of curiosity as was having trouble with the stock ECU and was curious to see the A/F ratio.

Does anyone know how accurate these gauges can be??

It holds 12.6 under full throttle using the standard ECU.

It's extremely responsive to throttle input and seems to have no lag in response either sweep or digital.

I completely understand that there is no substitute for an expensive sensor unit (autronic and the likes) when it comes to tuning.

Just curious to know.

Cheers.

[paulr33]

you cant rely on it, it uses the stock narrow band 02 sensor

so the output is only useful for the stock ecu trying to save fuel

im summary, the guage wont give you anything useful - sell it

[Slapstik]

Cheers

[frozenwaffles]

it will tell you if the stock o2 sensor is working or not, it will also tell you on cruise if the ecu is having an easy time correcting fuel mixtures as it will hover and bounce either side of 14.7 afr...

so not completely useless...