<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by DocH2:
...Power "under the curve" as I understand it means that the curve is drawn higher up on the chart therefore said engine has more power "below" that curve line. ...<HR></BLOCKQUOTE>
I think you have nearly simplified it yourself. The curve is relative to RPM and power under the curve means that you get additional torque or horespower at lower RPM and that creates a "new curve" that shows more power generated at each RPM level in reference to before.
Think of a chart. On the vertical is RPM and and on the horizontal is your power ratings. Since it normally takes higher RPMs to reach the same level of power, the new curve after a positive modification shows more power at lower RPMs and therefore is under the original curve.
This is a layman's description from a layman. I am no car, engine, dyno, etc. expert nor am I an engineer, but this is just what I get out of the description of more power under the curve.
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