With the clean diesel era now in full swing,enthusiasts are beginning to embraceemissions-compliant performance. After all,most of us don’t want to blatantly void thewarranty on our $80,000 trucks, or go tearinginto a brand-new vehicle. Thankfully, fearsof trashing the diesel particulate filter and blowing throughgallon after gallon of DEF have begun to subside—and inthe case of this article, it’s been proven that the 6.7L PowerStroke can support 580 rwhp with the factory emissionssystems in place. The hidden benefit of making DPF-onmodifications is that no one else will expect your truck to runso strong. The modern diesel sleeper is a smokeless truck.They’ll never see it coming.