With recent models generating up to 395 horsepower and 410 lb-ft of torque, the 5.7L HEMI ... an unlocked PCM to adjust its performance settings. If you are tuning a 2003 Ram 1500, for example ...

The 3.5L EcoBoost engine has been around long enough that there are several performance upgrades owners can choose from. Here are six of the best to consider.

For the first several years, there's no difference in performance as the engine produced 160 horsepower and 400 lb-ft of torque from 1989 ... you get some aftermarket tuning done you can reach ...

Installing a cold air intake is the simplest and most effective performance upgrade ... and up to 25 lb-ft of torque, making it a top choice among enthusiasts. Tuning is an effective way ...