You wrote an article
http://www.omninerd.com/2006/07/16/articles/57 Your graph Cold
Air intake at 92 ambient. What units is the flow in? I think Im
confused also. Shouldnt the flow rate go up with RPM? Have you
ever done a map of RPM versus flow rate or have any idea what
the exhaust flow rate is at idle? Thanks. Trying to blow myself
up! Actually, the Jeep Wrangler features a MAP sensor as opposed
to a MAF sensor. MAP measures manifold air pressure while MAF
measures manifold air flow. Soooo – I cannot measure the air
flow directly. However, if you look at the provided equations,
you can calculate it. Engine Mass Airflow = RPM * (Air Pressure
/ Intake Temperature) Thus, your assessment is correct. With
increased RPMs comes a higher air flow. Using the snorkel graph
you can see that 5.96 psi * idle RPM (roughly 600) will get you
a flow of 3576 compared to 20643 which was derived from 9.83 psi
* moving RPM (roughly 2100 at 65mph). Hope that helps. Welcome!
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