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Discussion Starter · #1 ·
So I recently went boosted and I know the boost/vacuum gauges have to be plumbed to work , but it appears that any AFT gauge is asking me to weld a sensor bung into the exhaust...when I data log AFR is displayed so there must be a factory sensor in there somewhere already..is there a gauge around that doesn't require me cutting into my exhaust?


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The primary o2 sensor measures AFR, the second measures cat efficiency. You can get a gauge that plugs into the OBD-II and has AFR capability, otherwise you'll need to add a bung for the gauge to actually read off the exhaust stream.
 

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No, it doesnt quite work like that. If you want a non-invasive, stand alone, gauge you'll need to get something OBD like an Aeroforce interceptor.
 

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you can use a nGauge or Aeroforce gauge to read the factory PIDs. You can also log them using Hptuners if you have it.

The factory sensors are already widebands, so you don't really need your own wideband gauge.
 
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