WOT air/fuel mix?

takiller · March 6th, 2008, 12:34 AM

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
Thanks

Doc8224 · March 6th, 2008, 01:49 AM

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.

Trick Tuners · March 6th, 2008, 11:52 AM

You shouldn't mess with the AF unless you have a wideband, or measured the current AF on a dyno.

acmillr · March 6th, 2008, 12:14 PM

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.

WAR-PARTY · March 6th, 2008, 03:11 PM

Originally Posted by Jgorm

You shouldn't mess with the AF unless you have a wideband, or measured the current AF on a dyno.

1+

March 6th, 2008, 12:34 AM	#1
takiller Hardcore Enthusiast 2003 Mustang GT 9.0 in the 8th Join Date: Aug 2007 Location: Texas Posts: 1,194 iTrader: 1 reviews	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 Thanks __________________ C&L CAI, 75 TB, Plenum, O/R H Pipe, SLP LM1's (Dumped), Eibach SS, Tokico S/S, Moser 31 Splines, Cobra Diff, FRPP 410's, XCal 3 93 Tune

March 6th, 2008, 01:49 AM	#2
Doc8224 N/A 4v Guru 2003 Mach 1 Join Date: Oct 2007 Location: Afghanistan Posts: 3,463 Blog Entries: 2 iTrader: 1 reviews	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. __________________ Military Crew U.S. Army Aviation Apache's Lead The Way

March 6th, 2008, 11:52 AM	#3
Trick Tuners MM Fanatic KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 4,471 iTrader: 3 reviews	You shouldn't mess with the AF unless you have a wideband, or measured the current AF on a dyno. __________________ Check out my forums for stuff on troubleshooting, tuning, etc We teamed up with Socal Performance Racing to bring dyno tuning to San Diego. Be friends with us on FB

March 6th, 2008, 12:14 PM	#4
acmillr MM's Mad Scientist Slow Fella Join Date: Jul 2006 Location: Tupelo, MS Posts: 5,120 iTrader: 2 reviews	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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Posted By	For	Type	Date
Best a F Ratio at Wot Mustang on Kosmix	This thread	Refback	May 1st, 2009 11:10 PM

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