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2010 R/T Classic 6M
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I noticed my tuner has my AFR set at roughly 11.8:1 by watching my wideband on pulls. Highest I see it is about 12.0 during a WOT. Is this a little rich for an N/A setup? Car runs great just curious as I always thought N/A motors like to be 12.5-13.0
 

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The Pork Wagon (‘14 Cop Charger)
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Every engine is different, but it may be running a little rich to squelch some lean knock the tuner saw at tune-time. If you have access to ask the original tuner, that's going to be the way to go. Only they know why they set the parameters the way they did.

Ultimately, the air fuel ratio that yields the least amount of KR while running the most spark advance possible is what's going to make the most power. If yours is doing that, there's no need to worry about the actual air fuel ratio I would think.
 
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The Pork Wagon (‘14 Cop Charger)
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I just recorded a WOT run I had in which I saw no KR at all, so the engine was literally running just about as good as it possibly could at the time. I don't have a wideband sensor, so I don't know what the actual AFR was, but I do have the expected AFR recorded, and at its most extreme, the PCM was spraying enough gas to hit 11.22.
 
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I noticed my tuner has my AFR set at roughly 11.8:1 by watching my wideband on pulls. Highest I see it is about 12.0 during a WOT. Is this a little rich for an N/A setup? Car runs great just curious as I always thought N/A motors like to be 12.5-13.0
My NA tune is set at 12.5.. now running 10lb boost and it's set at 11.5.

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