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 ...

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) ...

When it comes to electronically tuning your Mustang, the "chip" has been around for so long that trying anything else might make you leery. Of course, not all change is bad, and often there's a good ...