A/F Ratio
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From: Ft. Lauderdale, Fl. USA
A/F Ratio
I dynoed the new engine for my 99L. It ran 13.2 to 13.6 and the guy claimed it was too high. I just blew the old engine from detonation and am not curious enough to try another. What is optimum air fuel? Ken
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From: Indiana
Ken,
From what i have been told from several tuners they like there air-fuel ratio around 11.6 to 11.8 when they calibrate there chips.Anything over 12.5 could be a big problem for you is what i have been told!Maybe Spiro or JL can help here.
Matt
From what i have been told from several tuners they like there air-fuel ratio around 11.6 to 11.8 when they calibrate there chips.Anything over 12.5 could be a big problem for you is what i have been told!Maybe Spiro or JL can help here.
Matt
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Joined: Feb 2001
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Highroller is correct.
I had a early custom chip made and I remember the dyno king stating almost the same thing, except 'too rich'. I don't remember the exact figures but 11.? sure sounds correct.
All my dyno dude did was lean the A/F out and advance the timing until it pinged and backed off a bit. This netted me about 8% RWHP gain.
If you search this forum you'll find a program that you can load in your laptop, create a cable and plug it the L and check your own A/F and a few other neat things.
I also remember a trick that you can play with the odometer to show a lot of dash functions, I thought it showed a few other things also, maybe A/F?
So now you got 2 things you can search for if you're interested.
Looks like F1 going to start, goodnite.
[This message has been edited by lgogether (edited 03-03-2001).]
[This message has been edited by lgogether (edited 03-03-2001).]
I had a early custom chip made and I remember the dyno king stating almost the same thing, except 'too rich'. I don't remember the exact figures but 11.? sure sounds correct.
All my dyno dude did was lean the A/F out and advance the timing until it pinged and backed off a bit. This netted me about 8% RWHP gain.
If you search this forum you'll find a program that you can load in your laptop, create a cable and plug it the L and check your own A/F and a few other neat things.
I also remember a trick that you can play with the odometer to show a lot of dash functions, I thought it showed a few other things also, maybe A/F?
So now you got 2 things you can search for if you're interested.
Looks like F1 going to start, goodnite.
[This message has been edited by lgogether (edited 03-03-2001).]
[This message has been edited by lgogether (edited 03-03-2001).]
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From: Bay Area, CA
Digital Odometer: http://www.mustangworld.com/ourpics/fcar/dtcodes.htm
A/F of ~13 is considered lean at WOT!
A/F of ~13 is considered lean at WOT!
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From: lancaster,pa. usa
i'll say a little about the a/f thats something that tuners kinda keep under their hats so to speak because that has an important part in programing a chip for optimum performance! but man i don't want to see you blow your engine IMHO thats WAY to Lean....JL
------------------
93 cobra 10.90@127.00
99 lightning (black)
e.t. 12.41 @ 110.8
best mph 110.8
60 ft. 1.73
New Low E.T. 12.37!)
JL superchip
JL ram air
JL Powercooler
2# pulley
Level 10 shift kit
SuperChip Dist.!
(KEEP IT BETWEEN THE LINES!)
_ _ _ _ _ _ _ _ _ _ _ _ _
JohnnyLightning Performance
E-mail: jlightningracing@cs.com
WEB:JohnnylightningPerf.com
svtperformance.com
------------------
93 cobra 10.90@127.00
99 lightning (black)
e.t. 12.41 @ 110.8
best mph 110.8
60 ft. 1.73
New Low E.T. 12.37!)
JL superchip
JL ram air
JL Powercooler
2# pulley
Level 10 shift kit
SuperChip Dist.!
(KEEP IT BETWEEN THE LINES!)
_ _ _ _ _ _ _ _ _ _ _ _ _
JohnnyLightning Performance
E-mail: jlightningracing@cs.com
WEB:JohnnylightningPerf.com
svtperformance.com