Hit 12.5 A/F on the dyno but o2's read 820 on the street. Normal?
10-11-2004, 08:56 PM
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Hit 12.5 A/F on the dyno but o2's read 820 on the street. Normal? Just curious guys cause I thought we wanted to be around 880 - 900 millivolts at WOT with our narrowband o2's to get a good a/f. I'm not getting any knock retard but am curious cause the last thing I need is another toasted motor.
I hit 12.5 a/f on the dyno (mustang dyno so it has load too), Now on the street I hit around 820 millivolts at WOT. Can you guys tell me what you think about this? I'm gonna hit the dyno again tomorrow and see what happens.
I hit 12.5 a/f on the dyno (mustang dyno so it has load too), Now on the street I hit around 820 millivolts at WOT. Can you guys tell me what you think about this? I'm gonna hit the dyno again tomorrow and see what happens.
10-12-2004, 08:17 AM
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On my car 12.8=870mV, but that 50mV is as likely a
temperature difference as an air/fuel difference. Too
much variability in plumbing thermals when you get
away from the stock logs, to say what means what
on a modified setup.
If you could log in-car O2s at the dyno then you
could develop your own "mapping" of in-car to
wideband; semi-handy to know.
temperature difference as an air/fuel difference. Too
much variability in plumbing thermals when you get
away from the stock logs, to say what means what
on a modified setup.
If you could log in-car O2s at the dyno then you
could develop your own "mapping" of in-car to
wideband; semi-handy to know.
10-12-2004, 11:43 AM
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Originally Posted by jimmyblue
On my car 12.8=870mV, but that 50mV is as likely a
temperature difference as an air/fuel difference. Too
much variability in plumbing thermals when you get
away from the stock logs, to say what means what
on a modified setup.
If you could log in-car O2s at the dyno then you
could develop your own "mapping" of in-car to
wideband; semi-handy to know.
temperature difference as an air/fuel difference. Too
much variability in plumbing thermals when you get
away from the stock logs, to say what means what
on a modified setup.
If you could log in-car O2s at the dyno then you
could develop your own "mapping" of in-car to
wideband; semi-handy to know.
True enough, I'll keep that in mind at the dyno.
