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Taking a test drive, we found the Challenger to be responsive and powerful, without a sacrifice in drivability. Fuel mileage dropped slightly, but the MDS still works, giving us better than 22 mpg on the highway.

▲► On the dyno, power was definitely up across the board. The 22torque curve was broad, peaking at 433 lb/ft at 4,900 rpm. Horsepower was also up to an impressive 399 rear-wheel horsepower at 5,055 rpm. So we gained a solid 100 lb/ft of torque, and 90 horsepower at the rear wheels by installing the ProCharger HO system. With a fan in front of the intercooler to simulate driving at speed, or if our car had been bone stock when we began the installation, we have no doubt we could have achieved a solid 100 horsepower gain.

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At the Gainesville raceway, our best elapsed time was 13.26 at just over 107 mph. We were definitely limited by traction, with 60 foot times in the 2.13-second range, so with a set of drag radials, we should have no problem getting our Challenger into the 12s. MM

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