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Wideband Question

920 views 8 replies 4 participants last post by  5speed 
#1 ·
I put my AEM wide band and I'm running 13.5 from 5000-7000 and it goes to 13.9-14 at 7300 to 8000.I have the AEM sensor connected where the stock second 02 sensor is suppost to be at.Will it read leaner or richer or is that accurate.
 
#2 ·
14.6 is stoich not sure about ve but that sounds to be about right i know turbo the sweet spot with pump gas is about 11.9-12.1 and race gas you can go about 12.5
 
#8 · (Edited)
A catalytic convertor stores O2 and HC's so that the final product after the cat will be as close to 14.7:1 all the time. you need your wideband before the cat.
It's before the cat.So I guess that these number's are acurate.But I could still gain some good torque and whp from 1500 to 5k cause it reads 12.8 and I think it's a little to rich for that range.
 
#7 ·
So that means from 5k to 7k Im actualy at 13.0.So that means I could adjust and make alittle bit more power if I lean it out to 13.8 13.9.From 1500 to 5k the wide band reads 12.8.So if it's actualy .5 richer than what it's reading.Thats 12.3 afr at that range wich is stupid rich at that range.I could gain some good whp and tourque if I lean it out from 1500 to 5k.Lets asume this is correct about how much will I gain in torque and whp.I'm going to be installing a AFC this week.
 
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