News
2018-2023 Ram Cummins SGW Bypass: Why Your Tuner Won’t Talk to the ECM
A customer brings a 2019 Ram 2500 into the shop with an MM3 tuner in one hand and a look of frustration on his face. He plugged the tuner into the OBD-II port, followed the instructions, and the de...
Why Your L5P Needs CAN-BUS Plugs After a DPF Delete: Beyond Engine Lights
Deleting the DPF and DEF system on an L5P Duramax is a mechanical job — remove the filter, remove the injection nozzle, bolt in the delete pipe. The electrical side of the job is where it quietly g...
Is a Billet Valve Cover Worth It on a 2006-2024 Cummins? Beyond the Looks
The factory valve cover on a 5.9L or 6.7L Cummins is a lid. It seals. It does nothing else. A CNC billet cover adds an internal baffle that catches oil vapor before it reaches the turbo inlet, plus...
The 3.0L EcoDiesel Emissions Death Spiral: Why EGR and DPF Delete Fix It
The 3.0L EcoDiesel doesn’t die of old age. It dies of its own emissions system. The EGR cooler floods the DPF with carbon. The DPF chokes the EGR cooler with backpressure. Each accelerates the othe...
Why Does Your 6.7L Cummins Have a Throttle Valve? Why Deleting It Matters
The phrase throttle valve on a diesel engine triggers the wrong mental picture for almost everyone who hears it for the first time. On a gasoline engine, the throttle plate is the primary control m...
6.7L Cummins DPF Delete: Turbo-Back or Downpipe-Back : Which to Buy?
Two terms that show up in every 6.7L Cummins DPF delete product listing: turbo-back and downpipe-back. They sound like they should be almost the same thing. They are not. One replaces every inch of...
6.7L Powerstroke Parked Regen Stuck? How to Force a DPF Regen That Works
The DPF regeneration cycle on a 6.7L Powerstroke is supposed to be invisible. The ECM detects soot load, commands late in-cylinder post-injection pulses on the exhaust stroke, raises exhaust gas te...
Low Boost & High EGTs on a 6.4L Powerstroke? Why Your Up-Pipes Are Failing
Most boost leaks on a diesel truck announce themselves. A blown intercooler boot leaves you with a cloud of black smoke and a sound like a punctured balloon. A split CAC tube pops a P0299 underboos...
Can a Coolant Filter Stop 6.4L Powerstroke Casting Sand?
The 6.4L Powerstroke has a reputation problem, and most of the things people blame — twin turbos, high-pressure fuel pump, head gaskets — are downstream consequences of one root cause that most own...
