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Mustang Magic's Dynojet 248c chassis dyno offered us repeatable and accurate results. Because our car had a few mods already done to it, we expected more than the typical 350-360 rwhp. Instead, we were blown away with the 420hp reading we got. We agreed that the car's higher mileage was a contributor to the unusually high readings. Here, Mustang Magic tech Joe Lauzardo prepares our Cobra for another run to back it up. All runs before and after were corrected for the weather conditions.