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01-22-2008, 07:25 AM

#2

OneBadGMC

Senior Member

RACING JUNKIE

Join Date: Sep 2007

Location: Belleville, IL

Posts: 658

Theoretical optimal is 7.6:1, assuming perfect conditions under 14 PSI of atmospheric pressure.

Your A/F ratio will vary depending on altitude, motor efficiency, and humidity.

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