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Wideband and air fuel ratio

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Old 09-02-2009, 11:43 PM
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Default Wideband and air fuel ratio

I put a wideband sensor on my 6.0 N/A and it idles at about 14.6 and from part throttle to WOT it is between 14.0 and 15.0. Is that normal? I will be putting my magnacharger on this weekend and was wondering what my numbers should be at WOT and part throttle with the charger on there and the proper tune.
Old 09-03-2009, 09:28 AM
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My car idles around 14.5 afr, and WOT 11.5 is the max I see at 6,500 rpms. From what I have been told forced induction apps shouldn't go above 12-1 AFR.
Old 09-05-2009, 12:10 AM
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Are you saying at WOT you're over 14? If so, thats not good.
Old 09-05-2009, 11:45 AM
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yes that is what I am saying. It is a stock 6.0 from a 2007 chevy. It has headers and a cold air intake and that is it. But yes it is arounf 14.5 average at WOt and Idle and part throttle it stays pretty close to the same. It fluctuates up and down but it stays pretty close to that. It is N/A now i am installing the blower this weekend.
Old 09-05-2009, 03:34 PM
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It should not be that lean at WOT, that needs to be fixed asap. And dont even think about putting a blower on there with your current tune.
Old 09-05-2009, 06:23 PM
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ok I am not going to use the blower with my current tune, thats why i put the wideband in to tune for the blower.




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