When it comes to hand-held tuners that modify the factory tune on a mildly upgraded Mopar Hemi, the Predator was the tuner of choice for nearly a decade. At the time of its introduction, the Predator ...

Many old-school tuners and hot rodders know their way around a carburetor and distributor. They also know today's technology enables better performance and gas mileage than we ever imagined. I'll ...

Now that you've looked at the peak numbers and shrugged your shoulders, take a look at the rpm points from 5,200 on down. You'll see a solid gain of 5-17 hp and up to 30 lb-ft of torque (at 2,600 rpm) ...