O2 sensor interpetation and Pulse width

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daveinet
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O2 sensor interpetation and Pulse width

Post by daveinet »

I have a two part question regarding data I read under WOT. As the engine RPM increases, there is a slight down hill trend in the O2 reading. I also notice the pulsewidth decreases slightly as the RPM rises. KPA also decreases slightly as well - goes from 98 down to 92 from 2K to 4.8K rpm. Should I really be seeing less fuel per firing as the RPM increases, or does this mean that the slight decrease in the O2 mean that the WOT enrichment is not even keeping up with the RPM increase?
Dave
http://www.geocities.com/revconprince/index.html
502 Edelbrock/Howell MPFI Thorleys and Magnaflows - in a 13Klbs motorhome!

"There are 10 types of people in the world, those who understand binary and those who don't"
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daveinet
Posts: 36
Joined: Mon Apr 07, 2008 2:04 pm
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Post by daveinet »

Also would like o know if seeing slightly more vacuum as the RPM goes up is normal, or is my intake too restrictive?
Dave
http://www.geocities.com/revconprince/index.html
502 Edelbrock/Howell MPFI Thorleys and Magnaflows - in a 13Klbs motorhome!

"There are 10 types of people in the world, those who understand binary and those who don't"
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