WOT air/fuel mix? - Forums at Modded Mustangs
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post #1 of 5 Old March 6th, 2008, 12:34 AM Thread Starter
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WOT air/fuel mix?

On the xcal3 theres the option to change the WOT air/fuel mix by %'s. Does anyone know if you can SAFELY change that without doing any other changes. And if you can, does it do anything?
Dont mean to sound dumb if i do but i dont know very much about my tuner and i havent been able to find where i can read more about it

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post #2 of 5 Old March 6th, 2008, 01:49 AM
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You can if it needs it. You need to datalog it first to see where your AFR is. Have you up the timing any with the tuner? I have my mach at 4 degrees advance and 2% leaner on 91 octane.

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post #3 of 5 Old March 6th, 2008, 11:52 AM
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post #4 of 5 Old March 6th, 2008, 12:14 PM
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You would need to run a wideband and run the tune on a dyno. Different cars make better power at different a/f ratios. For instance, my car likes more fuel to run at it's best.

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post #5 of 5 Old March 6th, 2008, 03:11 PM
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Originally Posted by Jgorm View Post
You shouldn't mess with the AF unless you have a wideband, or measured the current AF on a dyno.

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