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 ...

Welcome to the very first tech story ever published on a C7 in the pages ofGMHTP. We've had our hands on a few of them at this point, but we never had the opportunity to modify one – until now. Rather ...

Technology has certainly advanced since the automobile was invented, and these advances have never been more apparent than in the latest offerings from Chrysler. And while some of these cars, like the ...

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) ...