2G Air/Fuel Ratio Gauge?

[talon1616]

Everyone says i need to buy a air/fuel ratio gauge. What should it read. 11, 12, 13. I have no clue what the gauge is for. can someone please explain it to me. Im new to turbo. i searched and still dont get it. What should it read on my car. I have a 1995 eagle talon tsi awd. It has a small 16g turbo, with 3 inch stainless steel exuast. Thanks for all of your help.

 

[DSMboostin15]

An air/fuel gauge displays the ratio of air to fuel in the engine. It works by measuring the Oxygen coming out of the exhaust. The higher amount of oxygen present in the exhaust, the leaner the engine is running since there is a higher amount of air over fuel. When the gauge shows a lower number, the engine is running richer - which is what you want when running boost. Most people shoot for between 10.9-11.3 when tuning, but our cars run as rich as 9:1 from the factory.

There are also 2 types of gauges: narrowband and wideband. The narrow band oxygen sensor is what comes standard on most production cars and measures 0-1V for closed loop opertation. The gauge that most people buy unknowingly is for narrowband. It is the "blinking light show" gauge that is only a representation of closed loop operation.

The wideband gauge is the one that you want. You'll have to buy a wideband sensor/controller and weld a bung into your downpipe, unless you buy one that also has narrowband simulation.

Hopefully this helps to clarify a few things.

 

[talon1616]

That help alot. Thanks alot for your help

 

[DSMboostin15]

No problem. That's what we are all here for.

 

[motorswapman]

Get a wideband o2

 

[Aproductions]

An air/fuel gauge displays the ratio of air to fuel in the engine. It works by measuring the Oxygen coming out of the exhaust. The higher amount of oxygen present in the exhaust, the leaner the engine is running since there is a higher amount of air over fuel. When the gauge shows a lower number, the engine is running richer - which is what you want when running boost. Most people shoot for between 10.9-11.3 when tuning, but our cars run as rich as 9:1 from the factory.

There are also 2 types of gauges: narrowband and wideband. The narrow band oxygen sensor is what comes standard on most production cars and measures 0-1V for closed loop opertation. The gauge that most people buy unknowingly is for narrowband. It is the "blinking light show" gauge that is only a representation of closed loop operation.

The wideband gauge is the one that you want. You'll have to buy a wideband sensor/controller and weld a bung into your downpipe, unless you buy one that also has narrowband simulation.

Hopefully this helps to clarify a few things.

very good explaination

 

[Gabe 71]

Hey can a AEM gauge and sensor run the car? I got a 93 Eagle Talon TSi. I'm wondering if It will give the ECU the right volt reference.

 

[llxkevinxll]

Hey can a aem gauge and sensor run the car I got a 93 eagle talon tsi. wondering if It will give the ECM the right volt reference.

If the gauge (controller) has a narrowband (0-1V) output then yes it should be able to run with the factory ECU. If you have ECMLink or a standalone ECU you can use the wideband (0-5V) output to log AFR.