Running lean?
10-23-2006, 12:13 AM
#1
1st Gear Member
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Join Date: May 2006
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Posts: 89
Running lean?
I had a dyno on Saturday and my 06GT's air/fuel ratio was running at about 13.5 on the final pull...in the 4k to 6k range. Should I use my Predator to adjust my air/fuel in that category down a bit or up a bit? Im not sure if I was adjusting it correctly on Saturday. This ratio was taken from the exhaust so I was told it may run .75 high or so. For the S197s what is the ideal air/fuel ratio? I was thinking around 12 or so.
10-23-2006, 12:55 PM
#2
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Join Date: Jun 2006
Location: Rocky Hill, CT
Posts: 346
RE: Running lean?
not an expert here but i think the stangs like to be around 12.8 and if i am not mistaken when they read from the tailpipe your air/fuel is not as accurate...I was told that the tail reading would be a few tenths lower by the o2 sensor, meaning your 13.5 may actually be a 13.2 or so....but again I am not an expert here
10-23-2006, 04:15 PM
#3
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Join Date: Jun 2006
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RE: Running lean?
ORIGINAL: Bigbishjas
I had a dyno on Saturday and my 06GT's air/fuel ratio was running at about 13.5 on the final pull...in the 4k to 6k range. Should I use my Predator to adjust my air/fuel in that category down a bit or up a bit? Im not sure if I was adjusting it correctly on Saturday. This ratio was taken from the exhaust so I was told it may run .75 high or so. For the S197s what is the ideal air/fuel ratio? I was thinking around 12 or so.
I had a dyno on Saturday and my 06GT's air/fuel ratio was running at about 13.5 on the final pull...in the 4k to 6k range. Should I use my Predator to adjust my air/fuel in that category down a bit or up a bit? Im not sure if I was adjusting it correctly on Saturday. This ratio was taken from the exhaust so I was told it may run .75 high or so. For the S197s what is the ideal air/fuel ratio? I was thinking around 12 or so.
So, at idle and when not floored, it should hover right around there... If you were indeed at WOT, then that is high...
Optimium HP generally comes around 12.5 but at high RPMs many tuners will push it below that for a margin of saftey...
10-24-2006, 12:14 PM
#4
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Join Date: May 2006
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Posts: 89
RE: Running lean?
ORIGINAL: cekim
13.5 is about where the computer will try to keep it when in "closed loop" mode (i.e. NOT Wide-Open-Throttle)...
So, at idle and when not floored, it should hover right around there... If you were indeed at WOT, then that is high...
Optimium HP generally comes around 12.5 but at high RPMs many tuners will push it below that for a margin of saftey...
ORIGINAL: Bigbishjas
I had a dyno on Saturday and my 06GT's air/fuel ratio was running at about 13.5 on the final pull...in the 4k to 6k range. Should I use my Predator to adjust my air/fuel in that category down a bit or up a bit? Im not sure if I was adjusting it correctly on Saturday. This ratio was taken from the exhaust so I was told it may run .75 high or so. For the S197s what is the ideal air/fuel ratio? I was thinking around 12 or so.
I had a dyno on Saturday and my 06GT's air/fuel ratio was running at about 13.5 on the final pull...in the 4k to 6k range. Should I use my Predator to adjust my air/fuel in that category down a bit or up a bit? Im not sure if I was adjusting it correctly on Saturday. This ratio was taken from the exhaust so I was told it may run .75 high or so. For the S197s what is the ideal air/fuel ratio? I was thinking around 12 or so.
So, at idle and when not floored, it should hover right around there... If you were indeed at WOT, then that is high...
Optimium HP generally comes around 12.5 but at high RPMs many tuners will push it below that for a margin of saftey...
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