If you’re doing the classic 7.3 Powerstroke 6637/BHAF intake mod, the filter is the whole point: big surface area, less restriction, built for work. The 6637 style has lived forever in the heavy … read more

The PHP HydraFlash Titan Tune Unlock (PHP-TITAN) is the add-on for 7.3 owners running a Hydra Tuner with modified single-shot injectors. Modified single shot injectors take special tuning not offered … read more

If you’ve got oil pooling in the 7.3 engine valley (under the fuel bowl/HPOP area), the HPOP is always on the suspect list—especially the rear/end plug and the high-pressure discharge fitt … read more

A big part of diagnosing issues with any engine is knowing how each system works. Electrical can freak people out because you can’t see it doing its thing. That’s usually the whole problem … read more

If a 1999–2003 Ford 7.3 Powerstroke is leaving oil in the valley, one of the first suspects is the high-pressure oil (HPOP) hose and its STC quick-connect fittings. The upgraded Riffraff HPOP JI … read more