The 6.0L Power Stroke diesel underwent a few minor upgrades that returned big dividends. First, there's a K&N AirCharger intake, and it's said to be good for a 15.5 hp increase. Next, there's a RBP Performance turbo-back 4-inch-diameter stainless steel exhaust system that the manufacturer claims is good for creating another 20 hp. Finally, there's an RBP Eliminator Power Programmer, which is said to offer up to a 130 hp increase. All total, this means that the Power Stroke engine is capable of producing almost 491 hp. Max torque is somewhere in the 885 lb-ft range.