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Discussion Starter #1
I had my wideband A/F gauge installed. Im now wondering if I should have someone look at the mapping. I have a SMS supercharger and it seems to run on the lean side.
Most of the time it seems to run between 14.7 - 15.3 .
Am I wrong here, I would feel more comftorable somewhere around 13.5 - 14.0.
 

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I had my wideband A/F gauge installed. Im now wondering if I should have someone look at the mapping. I have a SMS supercharger and it seems to run on the lean side.
Most of the time it seems to run between 14.7 - 15.3 .
Am I wrong here, I would feel more comftorable somewhere around 13.5 - 14.0.
I have a gauge in mine too. Mine is NA, no power adders. Your readings seem normal. Mine stays roughly at 14.7 until I go W. O. T. . At WOT it drops to 12.2 down to 11.8. I do a just WOT-AFL with the predator. If I set it for 12.6 or so I'm down on HP (TTL DATA LOGGER). Just my 2-cents.
 

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Those readings are OK while you're in closed loop. The O2 sensors will try to keep A/F at stoich, which is 14.7. However, in open loop, I wouldn't recommend anything >11.5, just to be on the safe side.
 

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Discussion Starter #5
Thanks for the info, I feel better now. I was worried that I was running lean.
 
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