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Old 10-14-2010, 11:54 AM   #9 (permalink)
comptiger5000
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Join Date: Feb 2010
Location: CT, USA
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RaceJeep - '98 Jeep Grand Cherokee (ZJ) 5.9 Limited
90 day: 13.62 mpg (US)
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More ignition timing (up to the ideal point) generally equals more power at a given RPM, similar to more compression. Basically, it increases cylinder pressure when the plug fires. This can lead to a gain in low-end torque, but it shouldn't cause a loss of high rpm torque.

Advanced cam timing, however, moves the entire powerband down.
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