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Pictured here is the baseline dyno graph before any tuning. This bright yellow bombshell pumped out 290 hp and 347 lb-ft of torque at the wheels, not exactly what we're looking for. The air/fuel ratio checked in at an extremely rich average of 11.8:1. Keep in mind that chassis dyno results will show a power loss through the drivetrain (typically around 23 percent with an automatic transmission).