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Due to the GN's stock bottom end, John tried to keep both the tune and boost fairly conservative. At WOT, the air/fuel ratio hovered from 10.75:1 to 12.00:1, averaging out to the 11.5 target. The intake air temps stayed a consistent 80 to 81 degrees on the dyno. Spark was kept at 24 degrees at WOT, and the injectors never surpassed 62 percent duty cycle. View Related Article
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