a newbe quandary
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
a newbe quandary
Since the O2 sensor does not opperate at WOT, how do you know if you are too lean or rich in WOT???
John
John
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Car: 1982 Z28
Engine: LS1
Transmission: T56
The O2 sensor operates at WOT.
The ECM doesn't run in Closed Loop mode, so it's not capturing input from the sensor and adjusting fuel delivery based on it.
I tune my Power Enrichment vs. RPM table ('165 ARAP code) using O2 sensor input. Not terribly accurate compared to a wide-band sensor but better than the carb guys have.
-Kevin
------------------
1982 Z-28
See http://www.mycar.net/mafb/registry/detail.cfm?id=276 for details
The ECM doesn't run in Closed Loop mode, so it's not capturing input from the sensor and adjusting fuel delivery based on it.
I tune my Power Enrichment vs. RPM table ('165 ARAP code) using O2 sensor input. Not terribly accurate compared to a wide-band sensor but better than the carb guys have.
-Kevin
------------------
1982 Z-28
See http://www.mycar.net/mafb/registry/detail.cfm?id=276 for details
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From: The Bone Yard
Car: Death Mobile
Engine: 666 c.i.
<font face="Verdana, Arial" size="2">Originally posted by kevinc:
I tune my Power Enrichment vs. RPM table ('165 ARAP code) using O2 sensor input. Not terribly accurate compared to a wide-band sensor but better than the carb guys have.
-Kevin
</font>
I tune my Power Enrichment vs. RPM table ('165 ARAP code) using O2 sensor input. Not terribly accurate compared to a wide-band sensor but better than the carb guys have.
-Kevin
</font>
I think even if you have a WB sensor, you should still get as MUCH information as possible. I really don't believe in "tuning by number" alone. It can lead to false conclusions and incorrect tuning.
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From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
<font face="Verdana, Arial" size="2">Originally posted by okfoz:
Since the O2 sensor does not opperate at WOT, how do you know if you are too lean or rich in WOT???
John</font>
Since the O2 sensor does not opperate at WOT, how do you know if you are too lean or rich in WOT???
John</font>
You have to measure performance, and see what the engine wants, and then give it that. This ol blanket of 38d timing thing is for the birds, or uninformed.
You have to actually test to find out what the engine wants, period
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