Test 13 Z
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With our timing at 28 degrees total, the 150hp jetting in place, our mule blasted out 672 hp and 677 lb-ft, with the plugs looking perfect! In anticipation of the 175 and 200 jetting, we swapped out the factory plugs for colder Densos, and dumped in a few gallons of 100-octane Rocket Brand fuel to avoid any chance of detonation. View Related Article
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