perfect air/fuel ratio?
Teching In
Joined: Aug 2002
Posts: 26
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From: Whippany, NJ
Re: perfect air/fuel ratio? Probably the most desirable AF ratio would be 13.0:1. This would create a stoichiometric atmosphere(not to rich/not too lean)
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Re: perfect air/fuel ratio? How did you all determine your WOT air/fuel ratio?
I have ATAP for the Palm and would like to see what mine is currently at. I definately smells rich.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
I have ATAP for the Palm and would like to see what mine is currently at. I definately smells rich.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
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Re: perfect air/fuel ratio? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by mrb00formula:
<strong>How did you all determine your WOT air/fuel ratio?
I have ATAP for the Palm and would like to see what mine is currently at. I definately smells rich.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">.89-.91 on O2 sensors B1S1 B1S2
<strong>How did you all determine your WOT air/fuel ratio?
I have ATAP for the Palm and would like to see what mine is currently at. I definately smells rich.. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">.89-.91 on O2 sensors B1S1 B1S2
TECH Fanatic
Joined: Nov 2001
Posts: 1,248
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From: Kansas City, MO
Re: perfect air/fuel ratio? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by MDL-01C5:
<strong>How much affect on power will running at 11.1-11.8 WOT have?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You'll find some HP by leaning it out to the 12.8 - 13.2 range. You can't say how much, but on a NA car I'd guess 15HP or more. You'd see a pretty broad change under the curve.
If you're FI, don't go above 12.5. Generally, I'd stick around 12.0 with FI.
<strong>How much affect on power will running at 11.1-11.8 WOT have?</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">You'll find some HP by leaning it out to the 12.8 - 13.2 range. You can't say how much, but on a NA car I'd guess 15HP or more. You'd see a pretty broad change under the curve.
If you're FI, don't go above 12.5. Generally, I'd stick around 12.0 with FI.
Re: perfect air/fuel ratio? i have a FI set up and it's set at 12.6:1 , the strange thing is i made the most power at 14.1:1 !! <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
TECH Fanatic
Joined: Nov 2001
Posts: 1,248
Likes: 0
From: Kansas City, MO
Re: perfect air/fuel ratio? LOL
Someimes you'll see a little more power up that high, but your chance of detonating is extremely high. Most of the FI I've worked on has been tuned in at about 12.0.
Someimes you'll see a little more power up that high, but your chance of detonating is extremely high. Most of the FI I've worked on has been tuned in at about 12.0.
Re: perfect air/fuel ratio? You will make more power with a a/f of 13.2 vs. 12.8 but keep in mind the dyno has less load than actual driving so if you target 12.8 you will probably be around 13.0 on the street/track.
