air/fuel ratio
10-18-2003, 10:12 PM
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air/fuel ratio
What kind of air/fuel ratio do I want for my power band? I'm looking for my answer to be like this: 1-4k = 14.5, 5-6k = 13.0, etc. I have a H22A4. My VTEC is currently set at 5100rpm.
10-18-2003, 10:26 PM
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@ sea leavel prob 11.5:1 meby 12.5:1 max but it will differ for each engin. usualy what ever produces the most power with decent egt's (I know, I know). always best to be on the safe side though.
10-18-2003, 10:30 PM
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p.s. when u dyno, when your fueling is all done, set ur vtec at 3k, and make a run. then set it at 7800 and make a run. where the tourq courves cross, set ur vtec there.
10-19-2003, 05:45 PM
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Re: (grndcont)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by grndcont »</TD></TR><TR><TD CLASS="quote">p.s. when u dyno, when your fueling is all done, set ur vtec at 3k, and make a run. then set it at 7800 and make a run. where the tourq courves cross, set ur vtec there.</TD></TR></TABLE>
VTEC at 3k? I thought it was unsafe to get it that low?
VTEC at 3k? I thought it was unsafe to get it that low?
10-20-2003, 09:07 PM
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Re: (grndcont)
what a/f you want shouldn't be from what RPM your motor is spinning at but rather load.
Therefore, when i tune, i go for 12.0:1 for anything above 5psi. 12.5:1 from 3psi to 5psi and about 13.5:1 from 0-3psi. Off boost, I'm looking around 13.5-14.5:1
Of course, this depends on your motor, plugs, timing, base timing, compression, etc etc..
Therefore, when i tune, i go for 12.0:1 for anything above 5psi. 12.5:1 from 3psi to 5psi and about 13.5:1 from 0-3psi. Off boost, I'm looking around 13.5-14.5:1
Of course, this depends on your motor, plugs, timing, base timing, compression, etc etc..
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