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24-03-2009, 04:28 PM
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Just slidin'
Join Date: Sep 2005
Location: Brisvegas
Posts: 7,791
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Hi guys,
Just wondering, what are good AFR's for a fully tuned, cammed and headwork AU6? And should the AFR's vary much or should it be straight line? Thanks josh
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MD Mondeo - For the family
NP Pajero - For the adventure |
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24-03-2009, 06:52 PM
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Regular Member
Join Date: Apr 2006
Posts: 119
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about 13:1 depends on the tuner/tune. should pretty much be a straight line
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24-03-2009, 10:55 PM
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Boost Addict
Join Date: Jan 2005
Location: North Brisbane
Posts: 1,151
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anywhere between 12.5 to 13.5 on an NA engine is fine, u will find it will start around the 13.x mark and slowly drop to the 12.x mark. on cruise u will see it being leaned out as far as 15:1
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N12 Pulsar - sold Gen1 Liberty Turbo - sold VP Commodore Turbo - sold LN65 Hilux Turbo - sold EL31 Corolla Turbo - sold Ford AU Ute Turbo - sold Ford AU XR8 Sedan - 5.4l V8 Turbo (in the build) Ford BA XR6T Ute - daily driver Ford FG XR6T Sedan - cruiser do you see a general trend? I DO  Can't live with it, can't live without it! |
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25-03-2009, 11:15 AM
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RIP...
Join Date: Dec 2004
Posts: 15,524
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12.5:1 to 13:1 on WOT.
Should be a straight line, but a few wriggles here and there is normal. Less than 12:1 and you're losing power, and more than 13.5:1 and you're in the danger zone. Cruise can actually be as high as 17:1.
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. Oval Everywhere... |
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25-03-2009, 11:20 AM
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Just slidin'
Join Date: Sep 2005
Location: Brisvegas
Posts: 7,791
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So 12.3 to 12.8 is good for power?
Or would a straight line (obviously not dead straight, lol) at say 13.1 would be better?
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MD Mondeo - For the family
NP Pajero - For the adventure |
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25-03-2009, 01:07 PM
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FF.Com.Au Hardcore
Join Date: Jan 2008
Location: Sunbury, vic.
Posts: 3,110
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all engines are slightly different and make power with slightly different afr's, but around 12.8 is pretty good for most, also wot makes max power on yours at 2000rpm can be be slightly different to wot does at 5000.
I've found with mine it makes more power a little richer 12.6 at 2500rpm, and up to 13.0 after 4000rpm.
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T058 TS50 - 302 AFR165, Victor 5.0, Custom Cam, tuned by me, 245.6rwkw 329rwhp at 6800rpm. |
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AFR's
Linear Mode
