30lbs vs 65lbs ... new oil is maybe a factor - temp more so and various oil viscosities - I am in a hot climate running 15/50. Also revs make a huge difference - 100 revs difference on idle could account for most of it.

Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge