When upgrading a 7.3L Powerstroke (1994–2003) for more power, one of the first hurdles is the PCM’s built-in overboost limit, which is typically around 23–24 PSI. Exceed that, and th … read more

In 1995 Ford began implementing the OBDII system in most of their vehicles. By 1996, due to a federal mandate, all vehicles were using the system. OBDII or On Board Diagnostics 2, gave us tons more da … read more

The 7.3L Powerstroke engine uses a HEUI (Hydraulically Actuated Electronically Controlled Unit Injector) fuel injection system. This means that the fuel injectors are actually fired by highly pressuri … read more

In the early days of light-duty diesel pickups, intercooling wasn’t a thing yet. GM’s 6.5L, the 7.3L found in OBS trucks, and even early 5.9L Cummins were all turbocharged, but none came w … read more

Summer is upon us, bringing high ambient temperatures and the recreational towing season. Both can push your 7.3L Powerstroke’s 4R100 transmission to its thermal limits. Heat is the number one e … read more